291275420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{389}}^1\times {\mathrm{1291}}^1$

素因数の和:1718

約数の個数: 48

約数和(自身を含む): 634888800

約数和(自身を除く): 343613380

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 389, 580, 778, 1291, 1556, 1945, 2582, 3890, 5164, 6455, 7780, 11281, 12910, 22562, 25820, 37439, 45124, 56405, 74878, 112810, 149756, 187195, 225620, 374390, 502199, 748780, 1004398, 2008796, 2510995, 5021990, 10043980, 14563771, 29127542, 58255084, 72818855, 145637710, 291275420]

約数ペア:

[(1, 291275420), (2, 145637710), (4, 72818855), (5, 58255084), (10, 29127542), (20, 14563771), (29, 10043980), (58, 5021990), (116, 2510995), (145, 2008796), (290, 1004398), (389, 748780), (580, 502199), (778, 374390), (1291, 225620), (1556, 187195), (1945, 149756), (2582, 112810), (3890, 74878), (5164, 56405), (6455, 45124), (7780, 37439), (11281, 25820), (12910, 22562)]