28065960

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1999}}^1$

素因数の和:2032

約数の個数: 128

約数和(自身を含む): 100800000

約数和(自身を除く): 72734040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 27, 30, 36, 39, 40, 45, 52, 54, 60, 65, 72, 78, 90, 104, 108, 117, 120, 130, 135, 156, 180, 195, 216, 234, 260, 270, 312, 351, 360, 390, 468, 520, 540, 585, 702, 780, 936, 1080, 1170, 1404, 1560, 1755, 1999, 2340, 2808, 3510, 3998, 4680, 5997, 7020, 7996, 9995, 11994, 14040, 15992, 17991, 19990, 23988, 25987, 29985, 35982, 39980, 47976, 51974, 53973, 59970, 71964, 77961, 79960, 89955, 103948, 107946, 119940, 129935, 143928, 155922, 179910, 207896, 215892, 233883, 239880, 259870, 269865, 311844, 359820, 389805, 431784, 467766, 519740, 539730, 623688, 701649, 719640, 779610, 935532, 1039480, 1079460, 1169415, 1403298, 1559220, 1871064, 2158920, 2338830, 2806596, 3118440, 3508245, 4677660, 5613192, 7016490, 9355320, 14032980, 28065960]

約数ペア:

[(1, 28065960), (2, 14032980), (3, 9355320), (4, 7016490), (5, 5613192), (6, 4677660), (8, 3508245), (9, 3118440), (10, 2806596), (12, 2338830), (13, 2158920), (15, 1871064), (18, 1559220), (20, 1403298), (24, 1169415), (26, 1079460), (27, 1039480), (30, 935532), (36, 779610), (39, 719640), (40, 701649), (45, 623688), (52, 539730), (54, 519740), (60, 467766), (65, 431784), (72, 389805), (78, 359820), (90, 311844), (104, 269865), (108, 259870), (117, 239880), (120, 233883), (130, 215892), (135, 207896), (156, 179910), (180, 155922), (195, 143928), (216, 129935), (234, 119940), (260, 107946), (270, 103948), (312, 89955), (351, 79960), (360, 77961), (390, 71964), (468, 59970), (520, 53973), (540, 51974), (585, 47976), (702, 39980), (780, 35982), (936, 29985), (1080, 25987), (1170, 23988), (1404, 19990), (1560, 17991), (1755, 15992), (1999, 14040), (2340, 11994), (2808, 9995), (3510, 7996), (3998, 7020), (4680, 5997)]