65408020

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1\times {\mathrm{467}}^1$

素因数の和:672

約数の個数: 48

約数和(自身を含む): 141523200

約数和(自身を除く): 76115180

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 149, 188, 235, 298, 467, 470, 596, 745, 934, 940, 1490, 1868, 2335, 2980, 4670, 7003, 9340, 14006, 21949, 28012, 35015, 43898, 69583, 70030, 87796, 109745, 139166, 140060, 219490, 278332, 347915, 438980, 695830, 1391660, 3270401, 6540802, 13081604, 16352005, 32704010, 65408020]

約数ペア:

[(1, 65408020), (2, 32704010), (4, 16352005), (5, 13081604), (10, 6540802), (20, 3270401), (47, 1391660), (94, 695830), (149, 438980), (188, 347915), (235, 278332), (298, 219490), (467, 140060), (470, 139166), (596, 109745), (745, 87796), (934, 70030), (940, 69583), (1490, 43898), (1868, 35015), (2335, 28012), (2980, 21949), (4670, 14006), (7003, 9340)]