21047910

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1861}}^1$

素因数の和:1913

約数の個数: 64

約数和(自身を含む): 56306880

約数和(自身を除く): 35258970

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 29, 30, 39, 58, 65, 78, 87, 130, 145, 174, 195, 290, 377, 390, 435, 754, 870, 1131, 1861, 1885, 2262, 3722, 3770, 5583, 5655, 9305, 11166, 11310, 18610, 24193, 27915, 48386, 53969, 55830, 72579, 107938, 120965, 145158, 161907, 241930, 269845, 323814, 362895, 539690, 701597, 725790, 809535, 1403194, 1619070, 2104791, 3507985, 4209582, 7015970, 10523955, 21047910]

約数ペア:

[(1, 21047910), (2, 10523955), (3, 7015970), (5, 4209582), (6, 3507985), (10, 2104791), (13, 1619070), (15, 1403194), (26, 809535), (29, 725790), (30, 701597), (39, 539690), (58, 362895), (65, 323814), (78, 269845), (87, 241930), (130, 161907), (145, 145158), (174, 120965), (195, 107938), (290, 72579), (377, 55830), (390, 53969), (435, 48386), (754, 27915), (870, 24193), (1131, 18610), (1861, 11310), (1885, 11166), (2262, 9305), (3722, 5655), (3770, 5583)]