21755325

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{151}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 38676096

約数和(自身を除く): 16920771

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 113, 151, 255, 339, 425, 453, 565, 755, 1275, 1695, 1921, 2265, 2567, 2825, 3775, 5763, 7701, 8475, 9605, 11325, 12835, 17063, 28815, 38505, 48025, 51189, 64175, 85315, 144075, 192525, 255945, 290071, 426575, 870213, 1279725, 1450355, 4351065, 7251775, 21755325]

約数ペア:

[(1, 21755325), (3, 7251775), (5, 4351065), (15, 1450355), (17, 1279725), (25, 870213), (51, 426575), (75, 290071), (85, 255945), (113, 192525), (151, 144075), (255, 85315), (339, 64175), (425, 51189), (453, 48025), (565, 38505), (755, 28815), (1275, 17063), (1695, 12835), (1921, 11325), (2265, 9605), (2567, 8475), (2825, 7701), (3775, 5763)]