21005910

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7529}}^1$

素因数の和:7573

約数の個数: 48

約数和(自身を含む): 56384640

約数和(自身を除く): 35378730

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 31, 45, 62, 90, 93, 155, 186, 279, 310, 465, 558, 930, 1395, 2790, 7529, 15058, 22587, 37645, 45174, 67761, 75290, 112935, 135522, 225870, 233399, 338805, 466798, 677610, 700197, 1166995, 1400394, 2100591, 2333990, 3500985, 4201182, 7001970, 10502955, 21005910]

約数ペア:

[(1, 21005910), (2, 10502955), (3, 7001970), (5, 4201182), (6, 3500985), (9, 2333990), (10, 2100591), (15, 1400394), (18, 1166995), (30, 700197), (31, 677610), (45, 466798), (62, 338805), (90, 233399), (93, 225870), (155, 135522), (186, 112935), (279, 75290), (310, 67761), (465, 45174), (558, 37645), (930, 22587), (1395, 15058), (2790, 7529)]