20476568

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:324

約数の個数: 64

約数和(自身を含む): 47096640

約数和(自身を除く): 26620072

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 56, 68, 119, 136, 137, 157, 238, 274, 314, 476, 548, 628, 952, 959, 1096, 1099, 1256, 1918, 2198, 2329, 2669, 3836, 4396, 4658, 5338, 7672, 8792, 9316, 10676, 16303, 18632, 18683, 21352, 21509, 32606, 37366, 43018, 65212, 74732, 86036, 130424, 149464, 150563, 172072, 301126, 365653, 602252, 731306, 1204504, 1462612, 2559571, 2925224, 5119142, 10238284, 20476568]

約数ペア:

[(1, 20476568), (2, 10238284), (4, 5119142), (7, 2925224), (8, 2559571), (14, 1462612), (17, 1204504), (28, 731306), (34, 602252), (56, 365653), (68, 301126), (119, 172072), (136, 150563), (137, 149464), (157, 130424), (238, 86036), (274, 74732), (314, 65212), (476, 43018), (548, 37366), (628, 32606), (952, 21509), (959, 21352), (1096, 18683), (1099, 18632), (1256, 16303), (1918, 10676), (2198, 9316), (2329, 8792), (2669, 7672), (3836, 5338), (4396, 4658)]