21653190

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:259

約数の個数: 128

約数和(自身を含む): 64512000

約数和(自身を除く): 42858810

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 30, 31, 39, 45, 54, 62, 65, 78, 90, 93, 117, 130, 135, 155, 186, 195, 199, 234, 270, 279, 310, 351, 390, 398, 403, 465, 558, 585, 597, 702, 806, 837, 930, 995, 1170, 1194, 1209, 1395, 1674, 1755, 1791, 1990, 2015, 2418, 2587, 2790, 2985, 3510, 3582, 3627, 4030, 4185, 5174, 5373, 5970, 6045, 6169, 7254, 7761, 8370, 8955, 10746, 10881, 12090, 12338, 12935, 15522, 17910, 18135, 18507, 21762, 23283, 25870, 26865, 30845, 36270, 37014, 38805, 46566, 53730, 54405, 55521, 61690, 69849, 77610, 80197, 92535, 108810, 111042, 116415, 139698, 160394, 166563, 185070, 232830, 240591, 277605, 333126, 349245, 400985, 481182, 555210, 698490, 721773, 801970, 832815, 1202955, 1443546, 1665630, 2165319, 2405910, 3608865, 4330638, 7217730, 10826595, 21653190]

約数ペア:

[(1, 21653190), (2, 10826595), (3, 7217730), (5, 4330638), (6, 3608865), (9, 2405910), (10, 2165319), (13, 1665630), (15, 1443546), (18, 1202955), (26, 832815), (27, 801970), (30, 721773), (31, 698490), (39, 555210), (45, 481182), (54, 400985), (62, 349245), (65, 333126), (78, 277605), (90, 240591), (93, 232830), (117, 185070), (130, 166563), (135, 160394), (155, 139698), (186, 116415), (195, 111042), (199, 108810), (234, 92535), (270, 80197), (279, 77610), (310, 69849), (351, 61690), (390, 55521), (398, 54405), (403, 53730), (465, 46566), (558, 38805), (585, 37014), (597, 36270), (702, 30845), (806, 26865), (837, 25870), (930, 23283), (995, 21762), (1170, 18507), (1194, 18135), (1209, 17910), (1395, 15522), (1674, 12935), (1755, 12338), (1791, 12090), (1990, 10881), (2015, 10746), (2418, 8955), (2587, 8370), (2790, 7761), (2985, 7254), (3510, 6169), (3582, 6045), (3627, 5970), (4030, 5373), (4185, 5174)]