21977730

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{631}}^1$

素因数の和:693

約数の個数: 80

約数和(自身を含む): 60565824

約数和(自身を除く): 38588094

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 43, 45, 54, 81, 86, 90, 129, 135, 162, 215, 258, 270, 387, 405, 430, 631, 645, 774, 810, 1161, 1262, 1290, 1893, 1935, 2322, 3155, 3483, 3786, 3870, 5679, 5805, 6310, 6966, 9465, 11358, 11610, 17037, 17415, 18930, 27133, 28395, 34074, 34830, 51111, 54266, 56790, 81399, 85185, 102222, 135665, 162798, 170370, 244197, 255555, 271330, 406995, 488394, 511110, 732591, 813990, 1220985, 1465182, 2197773, 2441970, 3662955, 4395546, 7325910, 10988865, 21977730]

約数ペア:

[(1, 21977730), (2, 10988865), (3, 7325910), (5, 4395546), (6, 3662955), (9, 2441970), (10, 2197773), (15, 1465182), (18, 1220985), (27, 813990), (30, 732591), (43, 511110), (45, 488394), (54, 406995), (81, 271330), (86, 255555), (90, 244197), (129, 170370), (135, 162798), (162, 135665), (215, 102222), (258, 85185), (270, 81399), (387, 56790), (405, 54266), (430, 51111), (631, 34830), (645, 34074), (774, 28395), (810, 27133), (1161, 18930), (1262, 17415), (1290, 17037), (1893, 11610), (1935, 11358), (2322, 9465), (3155, 6966), (3483, 6310), (3786, 5805), (3870, 5679)]