21353520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{193}}^1\times {\mathrm{461}}^1$

素因数の和:670

約数の個数: 80

約数和(自身を含む): 66683232

約数和(自身を除く): 45329712

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 193, 240, 386, 461, 579, 772, 922, 965, 1158, 1383, 1544, 1844, 1930, 2305, 2316, 2766, 2895, 3088, 3688, 3860, 4610, 4632, 5532, 5790, 6915, 7376, 7720, 9220, 9264, 11064, 11580, 13830, 15440, 18440, 22128, 23160, 27660, 36880, 46320, 55320, 88973, 110640, 177946, 266919, 355892, 444865, 533838, 711784, 889730, 1067676, 1334595, 1423568, 1779460, 2135352, 2669190, 3558920, 4270704, 5338380, 7117840, 10676760, 21353520]

約数ペア:

[(1, 21353520), (2, 10676760), (3, 7117840), (4, 5338380), (5, 4270704), (6, 3558920), (8, 2669190), (10, 2135352), (12, 1779460), (15, 1423568), (16, 1334595), (20, 1067676), (24, 889730), (30, 711784), (40, 533838), (48, 444865), (60, 355892), (80, 266919), (120, 177946), (193, 110640), (240, 88973), (386, 55320), (461, 46320), (579, 36880), (772, 27660), (922, 23160), (965, 22128), (1158, 18440), (1383, 15440), (1544, 13830), (1844, 11580), (1930, 11064), (2305, 9264), (2316, 9220), (2766, 7720), (2895, 7376), (3088, 6915), (3688, 5790), (3860, 5532), (4610, 4632)]