647564228840

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{13781}}^1\times {\mathrm{7207}}^1$

素因数の和:21162

約数の個数: 64

約数和(自身を含む): 1466268082560

約数和(自身を除く): 818703853720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6520, 7207, 13781, 14414, 27562, 28828, 36035, 55124, 57656, 68905, 72070, 110248, 137810, 144140, 275620, 288280, 551240, 1174741, 2246303, 2349482, 4492606, 4698964, 5873705, 8985212, 9397928, 11231515, 11747410, 17970424, 22463030, 23494820, 44926060, 46989640, 89852120, 99319667, 198639334, 397278668, 496598335, 794557336, 993196670, 1986393340, 3972786680, 16189105721, 32378211442, 64756422884, 80945528605, 129512845768, 161891057210, 323782114420, 647564228840]

約数ペア:

[(1, 647564228840), (2, 323782114420), (4, 161891057210), (5, 129512845768), (8, 80945528605), (10, 64756422884), (20, 32378211442), (40, 16189105721), (163, 3972786680), (326, 1986393340), (652, 993196670), (815, 794557336), (1304, 496598335), (1630, 397278668), (3260, 198639334), (6520, 99319667), (7207, 89852120), (13781, 46989640), (14414, 44926060), (27562, 23494820), (28828, 22463030), (36035, 17970424), (55124, 11747410), (57656, 11231515), (68905, 9397928), (72070, 8985212), (110248, 5873705), (137810, 4698964), (144140, 4492606), (275620, 2349482), (288280, 2246303), (551240, 1174741)]