398947432

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1$

素因数の和:347

約数の個数: 128

約数和(自身を含む): 914457600

約数和(自身を除く): 515510168

約数列:

[1, 2, 4, 8, 13, 17, 26, 29, 31, 34, 52, 58, 62, 68, 104, 116, 124, 136, 221, 232, 248, 251, 377, 403, 442, 493, 502, 527, 754, 806, 884, 899, 986, 1004, 1054, 1508, 1612, 1768, 1798, 1972, 2008, 2108, 3016, 3224, 3263, 3596, 3944, 4216, 4267, 6409, 6526, 6851, 7192, 7279, 7781, 8534, 11687, 12818, 13052, 13702, 14558, 15283, 15562, 17068, 23374, 25636, 26104, 27404, 29116, 30566, 31124, 34136, 46748, 51272, 54808, 55471, 58232, 61132, 62248, 93496, 94627, 101153, 110942, 122264, 123743, 132277, 189254, 198679, 202306, 221884, 225649, 247486, 264554, 378508, 397358, 404612, 443768, 451298, 494972, 529108, 757016, 794716, 809224, 902596, 989944, 1058216, 1589432, 1608659, 1719601, 1805192, 2933437, 3217318, 3439202, 3836033, 5866874, 6434636, 6878404, 7672066, 11733748, 12869272, 13756808, 15344132, 23467496, 30688264, 49868429, 99736858, 199473716, 398947432]

約数ペア:

[(1, 398947432), (2, 199473716), (4, 99736858), (8, 49868429), (13, 30688264), (17, 23467496), (26, 15344132), (29, 13756808), (31, 12869272), (34, 11733748), (52, 7672066), (58, 6878404), (62, 6434636), (68, 5866874), (104, 3836033), (116, 3439202), (124, 3217318), (136, 2933437), (221, 1805192), (232, 1719601), (248, 1608659), (251, 1589432), (377, 1058216), (403, 989944), (442, 902596), (493, 809224), (502, 794716), (527, 757016), (754, 529108), (806, 494972), (884, 451298), (899, 443768), (986, 404612), (1004, 397358), (1054, 378508), (1508, 264554), (1612, 247486), (1768, 225649), (1798, 221884), (1972, 202306), (2008, 198679), (2108, 189254), (3016, 132277), (3224, 123743), (3263, 122264), (3596, 110942), (3944, 101153), (4216, 94627), (4267, 93496), (6409, 62248), (6526, 61132), (6851, 58232), (7192, 55471), (7279, 54808), (7781, 51272), (8534, 46748), (11687, 34136), (12818, 31124), (13052, 30566), (13702, 29116), (14558, 27404), (15283, 26104), (15562, 25636), (17068, 23374)]