28072980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:108

約数の個数: 240

約数和(自身を含む): 100176384

約数和(自身を除く): 72103404

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 31, 36, 39, 43, 45, 52, 54, 60, 62, 65, 78, 81, 86, 90, 93, 108, 117, 124, 129, 130, 135, 155, 156, 162, 172, 180, 186, 195, 215, 234, 258, 260, 270, 279, 310, 324, 351, 372, 387, 390, 403, 405, 430, 465, 468, 516, 540, 558, 559, 585, 620, 645, 702, 774, 780, 806, 810, 837, 860, 930, 1053, 1116, 1118, 1161, 1170, 1209, 1290, 1333, 1395, 1404, 1548, 1612, 1620, 1674, 1677, 1755, 1860, 1935, 2015, 2106, 2236, 2322, 2340, 2418, 2511, 2580, 2666, 2790, 2795, 3348, 3354, 3483, 3510, 3627, 3870, 3999, 4030, 4185, 4212, 4644, 4836, 5022, 5031, 5265, 5332, 5580, 5590, 5805, 6045, 6665, 6708, 6966, 7020, 7254, 7740, 7998, 8060, 8370, 8385, 10044, 10062, 10530, 10881, 11180, 11610, 11997, 12090, 12555, 13330, 13932, 14508, 15093, 15996, 16740, 16770, 17329, 17415, 18135, 19995, 20124, 21060, 21762, 23220, 23994, 24180, 25110, 25155, 26660, 30186, 32643, 33540, 34658, 34830, 35991, 36270, 39990, 43524, 45279, 47988, 50220, 50310, 51987, 54405, 59985, 60372, 65286, 69316, 69660, 71982, 72540, 75465, 79980, 86645, 90558, 100620, 103974, 107973, 108810, 119970, 130572, 143964, 150930, 155961, 163215, 173290, 179955, 181116, 207948, 215946, 217620, 226395, 239940, 259935, 301860, 311922, 326430, 346580, 359910, 431892, 452790, 467883, 519870, 539865, 623844, 652860, 719820, 779805, 905580, 935766, 1039740, 1079730, 1403649, 1559610, 1871532, 2159460, 2339415, 2807298, 3119220, 4678830, 5614596, 7018245, 9357660, 14036490, 28072980]

約数ペア:

[(1, 28072980), (2, 14036490), (3, 9357660), (4, 7018245), (5, 5614596), (6, 4678830), (9, 3119220), (10, 2807298), (12, 2339415), (13, 2159460), (15, 1871532), (18, 1559610), (20, 1403649), (26, 1079730), (27, 1039740), (30, 935766), (31, 905580), (36, 779805), (39, 719820), (43, 652860), (45, 623844), (52, 539865), (54, 519870), (60, 467883), (62, 452790), (65, 431892), (78, 359910), (81, 346580), (86, 326430), (90, 311922), (93, 301860), (108, 259935), (117, 239940), (124, 226395), (129, 217620), (130, 215946), (135, 207948), (155, 181116), (156, 179955), (162, 173290), (172, 163215), (180, 155961), (186, 150930), (195, 143964), (215, 130572), (234, 119970), (258, 108810), (260, 107973), (270, 103974), (279, 100620), (310, 90558), (324, 86645), (351, 79980), (372, 75465), (387, 72540), (390, 71982), (403, 69660), (405, 69316), (430, 65286), (465, 60372), (468, 59985), (516, 54405), (540, 51987), (558, 50310), (559, 50220), (585, 47988), (620, 45279), (645, 43524), (702, 39990), (774, 36270), (780, 35991), (806, 34830), (810, 34658), (837, 33540), (860, 32643), (930, 30186), (1053, 26660), (1116, 25155), (1118, 25110), (1161, 24180), (1170, 23994), (1209, 23220), (1290, 21762), (1333, 21060), (1395, 20124), (1404, 19995), (1548, 18135), (1612, 17415), (1620, 17329), (1674, 16770), (1677, 16740), (1755, 15996), (1860, 15093), (1935, 14508), (2015, 13932), (2106, 13330), (2236, 12555), (2322, 12090), (2340, 11997), (2418, 11610), (2511, 11180), (2580, 10881), (2666, 10530), (2790, 10062), (2795, 10044), (3348, 8385), (3354, 8370), (3483, 8060), (3510, 7998), (3627, 7740), (3870, 7254), (3999, 7020), (4030, 6966), (4185, 6708), (4212, 6665), (4644, 6045), (4836, 5805), (5022, 5590), (5031, 5580), (5265, 5332)]