21558680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3769}}^1$

素因数の和:3804

約数の個数: 64

約数和(自身を含む): 57002400

約数和(自身を除く): 35443720

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, 3769, 5720, 7538, 15076, 18845, 30152, 37690, 41459, 48997, 75380, 82918, 97994, 150760, 165836, 195988, 207295, 244985, 331672, 391976, 414590, 489970, 538967, 829180, 979940, 1077934, 1658360, 1959880, 2155868, 2694835, 4311736, 5389670, 10779340, 21558680]

約数ペア:

[(1, 21558680), (2, 10779340), (4, 5389670), (5, 4311736), (8, 2694835), (10, 2155868), (11, 1959880), (13, 1658360), (20, 1077934), (22, 979940), (26, 829180), (40, 538967), (44, 489970), (52, 414590), (55, 391976), (65, 331672), (88, 244985), (104, 207295), (110, 195988), (130, 165836), (143, 150760), (220, 97994), (260, 82918), (286, 75380), (440, 48997), (520, 41459), (572, 37690), (715, 30152), (1144, 18845), (1430, 15076), (2860, 7538), (3769, 5720)]