661389712

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{577}}^1\times {\mathrm{2311}}^1$

素因数の和:2927

約数の個数: 40

約数和(自身を含む): 1325645312

約数和(自身を除く): 664255600

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 577, 1154, 2308, 2311, 4616, 4622, 9232, 9244, 17887, 18488, 35774, 36976, 71548, 71641, 143096, 143282, 286192, 286564, 573128, 1146256, 1333447, 2666894, 5333788, 10667576, 21335152, 41336857, 82673714, 165347428, 330694856, 661389712]

約数ペア:

[(1, 661389712), (2, 330694856), (4, 165347428), (8, 82673714), (16, 41336857), (31, 21335152), (62, 10667576), (124, 5333788), (248, 2666894), (496, 1333447), (577, 1146256), (1154, 573128), (2308, 286564), (2311, 286192), (4616, 143282), (4622, 143096), (9232, 71641), (9244, 71548), (17887, 36976), (18488, 35774)]