21538530

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{449}}^1$

素因数の和:516

約数の個数: 96

約数和(自身を含む): 61916400

約数和(自身を除く): 40377870

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 39, 41, 45, 65, 78, 82, 90, 117, 123, 130, 195, 205, 234, 246, 369, 390, 410, 449, 533, 585, 615, 738, 898, 1066, 1170, 1230, 1347, 1599, 1845, 2245, 2665, 2694, 3198, 3690, 4041, 4490, 4797, 5330, 5837, 6735, 7995, 8082, 9594, 11674, 13470, 15990, 17511, 18409, 20205, 23985, 29185, 35022, 36818, 40410, 47970, 52533, 55227, 58370, 87555, 92045, 105066, 110454, 165681, 175110, 184090, 239317, 262665, 276135, 331362, 478634, 525330, 552270, 717951, 828405, 1196585, 1435902, 1656810, 2153853, 2393170, 3589755, 4307706, 7179510, 10769265, 21538530]

約数ペア:

[(1, 21538530), (2, 10769265), (3, 7179510), (5, 4307706), (6, 3589755), (9, 2393170), (10, 2153853), (13, 1656810), (15, 1435902), (18, 1196585), (26, 828405), (30, 717951), (39, 552270), (41, 525330), (45, 478634), (65, 331362), (78, 276135), (82, 262665), (90, 239317), (117, 184090), (123, 175110), (130, 165681), (195, 110454), (205, 105066), (234, 92045), (246, 87555), (369, 58370), (390, 55227), (410, 52533), (449, 47970), (533, 40410), (585, 36818), (615, 35022), (738, 29185), (898, 23985), (1066, 20205), (1170, 18409), (1230, 17511), (1347, 15990), (1599, 13470), (1845, 11674), (2245, 9594), (2665, 8082), (2694, 7995), (3198, 6735), (3690, 5837), (4041, 5330), (4490, 4797)]