81801684620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{449}}^1\times {\mathrm{9479}}^1$

素因数の和:9999

約数の個数: 72

約数和(自身を含む): 177917796000

約数和(自身を除く): 96116111380

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 449, 620, 898, 961, 1796, 1922, 2245, 3844, 4490, 4805, 8980, 9479, 9610, 13919, 18958, 19220, 27838, 37916, 47395, 55676, 69595, 94790, 139190, 189580, 278380, 293849, 431489, 587698, 862978, 1175396, 1469245, 1725956, 2157445, 2938490, 4256071, 4314890, 5876980, 8512142, 8629780, 9109319, 17024284, 18218638, 21280355, 36437276, 42560710, 45546595, 85121420, 91093190, 131938201, 182186380, 263876402, 527752804, 659691005, 1319382010, 2638764020, 4090084231, 8180168462, 16360336924, 20450421155, 40900842310, 81801684620]

約数ペア:

[(1, 81801684620), (2, 40900842310), (4, 20450421155), (5, 16360336924), (10, 8180168462), (20, 4090084231), (31, 2638764020), (62, 1319382010), (124, 659691005), (155, 527752804), (310, 263876402), (449, 182186380), (620, 131938201), (898, 91093190), (961, 85121420), (1796, 45546595), (1922, 42560710), (2245, 36437276), (3844, 21280355), (4490, 18218638), (4805, 17024284), (8980, 9109319), (9479, 8629780), (9610, 8512142), (13919, 5876980), (18958, 4314890), (19220, 4256071), (27838, 2938490), (37916, 2157445), (47395, 1725956), (55676, 1469245), (69595, 1175396), (94790, 862978), (139190, 587698), (189580, 431489), (278380, 293849)]