21318440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3727}}^1$

素因数の和:3762

約数の個数: 64

約数和(自身を含む): 56367360

約数和(自身を除く): 35048920

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 88, 104, 110, 130, 143, 220, 260, 286, 440, 520, 572, 715, 1144, 1430, 2860, 3727, 5720, 7454, 14908, 18635, 29816, 37270, 40997, 48451, 74540, 81994, 96902, 149080, 163988, 193804, 204985, 242255, 327976, 387608, 409970, 484510, 532961, 819940, 969020, 1065922, 1639880, 1938040, 2131844, 2664805, 4263688, 5329610, 10659220, 21318440]

約数ペア:

[(1, 21318440), (2, 10659220), (4, 5329610), (5, 4263688), (8, 2664805), (10, 2131844), (11, 1938040), (13, 1639880), (20, 1065922), (22, 969020), (26, 819940), (40, 532961), (44, 484510), (52, 409970), (55, 387608), (65, 327976), (88, 242255), (104, 204985), (110, 193804), (130, 163988), (143, 149080), (220, 96902), (260, 81994), (286, 74540), (440, 48451), (520, 40997), (572, 37270), (715, 29816), (1144, 18635), (1430, 14908), (2860, 7454), (3727, 5720)]