21377450

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1$

素因数の和:279

約数の個数: 48

約数和(自身を含む): 41607456

約数和(自身を除く): 20230006

約数列:

[1, 2, 5, 10, 25, 43, 50, 61, 86, 122, 163, 215, 305, 326, 430, 610, 815, 1075, 1525, 1630, 2150, 2623, 3050, 4075, 5246, 7009, 8150, 9943, 13115, 14018, 19886, 26230, 35045, 49715, 65575, 70090, 99430, 131150, 175225, 248575, 350450, 427549, 497150, 855098, 2137745, 4275490, 10688725, 21377450]

約数ペア:

[(1, 21377450), (2, 10688725), (5, 4275490), (10, 2137745), (25, 855098), (43, 497150), (50, 427549), (61, 350450), (86, 248575), (122, 175225), (163, 131150), (215, 99430), (305, 70090), (326, 65575), (430, 49715), (610, 35045), (815, 26230), (1075, 19886), (1525, 14018), (1630, 13115), (2150, 9943), (2623, 8150), (3050, 7009), (4075, 5246)]