278345320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{3881}}^1$

素因数の和:4066

約数の個数: 64

約数和(自身を含む): 687579840

約数和(自身を除く): 409234520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 163, 220, 326, 440, 652, 815, 1304, 1630, 1793, 3260, 3586, 3881, 6520, 7172, 7762, 8965, 14344, 15524, 17930, 19405, 31048, 35860, 38810, 42691, 71720, 77620, 85382, 155240, 170764, 213455, 341528, 426910, 632603, 853820, 1265206, 1707640, 2530412, 3163015, 5060824, 6326030, 6958633, 12652060, 13917266, 25304120, 27834532, 34793165, 55669064, 69586330, 139172660, 278345320]

約数ペア:

[(1, 278345320), (2, 139172660), (4, 69586330), (5, 55669064), (8, 34793165), (10, 27834532), (11, 25304120), (20, 13917266), (22, 12652060), (40, 6958633), (44, 6326030), (55, 5060824), (88, 3163015), (110, 2530412), (163, 1707640), (220, 1265206), (326, 853820), (440, 632603), (652, 426910), (815, 341528), (1304, 213455), (1630, 170764), (1793, 155240), (3260, 85382), (3586, 77620), (3881, 71720), (6520, 42691), (7172, 38810), (7762, 35860), (8965, 31048), (14344, 19405), (15524, 17930)]