257003690

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{379}}^1$

素因数の和:531

約数の個数: 64

約数和(自身を含む): 505612800

約数和(自身を除く): 248609110

約数列:

[1, 2, 5, 10, 19, 38, 43, 83, 86, 95, 166, 190, 215, 379, 415, 430, 758, 817, 830, 1577, 1634, 1895, 3154, 3569, 3790, 4085, 7138, 7201, 7885, 8170, 14402, 15770, 16297, 17845, 31457, 32594, 35690, 36005, 62914, 67811, 72010, 81485, 135622, 157285, 162970, 309643, 314570, 339055, 597683, 619286, 678110, 1195366, 1352651, 1548215, 2705302, 2988415, 3096430, 5976830, 6763255, 13526510, 25700369, 51400738, 128501845, 257003690]

約数ペア:

[(1, 257003690), (2, 128501845), (5, 51400738), (10, 25700369), (19, 13526510), (38, 6763255), (43, 5976830), (83, 3096430), (86, 2988415), (95, 2705302), (166, 1548215), (190, 1352651), (215, 1195366), (379, 678110), (415, 619286), (430, 597683), (758, 339055), (817, 314570), (830, 309643), (1577, 162970), (1634, 157285), (1895, 135622), (3154, 81485), (3569, 72010), (3790, 67811), (4085, 62914), (7138, 36005), (7201, 35690), (7885, 32594), (8170, 31457), (14402, 17845), (15770, 16297)]