21515910

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1283}}^1$

素因数の和:1349

約数の個数: 64

約数和(自身を含む): 56947968

約数和(自身を除く): 35432058

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 43, 65, 78, 86, 129, 130, 195, 215, 258, 390, 430, 559, 645, 1118, 1283, 1290, 1677, 2566, 2795, 3354, 3849, 5590, 6415, 7698, 8385, 12830, 16679, 16770, 19245, 33358, 38490, 50037, 55169, 83395, 100074, 110338, 165507, 166790, 250185, 275845, 331014, 500370, 551690, 717197, 827535, 1434394, 1655070, 2151591, 3585985, 4303182, 7171970, 10757955, 21515910]

約数ペア:

[(1, 21515910), (2, 10757955), (3, 7171970), (5, 4303182), (6, 3585985), (10, 2151591), (13, 1655070), (15, 1434394), (26, 827535), (30, 717197), (39, 551690), (43, 500370), (65, 331014), (78, 275845), (86, 250185), (129, 166790), (130, 165507), (195, 110338), (215, 100074), (258, 83395), (390, 55169), (430, 50037), (559, 38490), (645, 33358), (1118, 19245), (1283, 16770), (1290, 16679), (1677, 12830), (2566, 8385), (2795, 7698), (3354, 6415), (3849, 5590)]