398978840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{5857}}^1$

素因数の和:6012

約数の個数: 64

約数和(自身を含む): 974302560

約数和(自身を除く): 575323720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 131, 260, 262, 520, 524, 655, 1048, 1310, 1703, 2620, 3406, 5240, 5857, 6812, 8515, 11714, 13624, 17030, 23428, 29285, 34060, 46856, 58570, 68120, 76141, 117140, 152282, 234280, 304564, 380705, 609128, 761410, 767267, 1522820, 1534534, 3045640, 3069068, 3836335, 6138136, 7672670, 9974471, 15345340, 19948942, 30690680, 39897884, 49872355, 79795768, 99744710, 199489420, 398978840]

約数ペア:

[(1, 398978840), (2, 199489420), (4, 99744710), (5, 79795768), (8, 49872355), (10, 39897884), (13, 30690680), (20, 19948942), (26, 15345340), (40, 9974471), (52, 7672670), (65, 6138136), (104, 3836335), (130, 3069068), (131, 3045640), (260, 1534534), (262, 1522820), (520, 767267), (524, 761410), (655, 609128), (1048, 380705), (1310, 304564), (1703, 234280), (2620, 152282), (3406, 117140), (5240, 76141), (5857, 68120), (6812, 58570), (8515, 46856), (11714, 34060), (13624, 29285), (17030, 23428)]