21577480

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{223}}^1$

素因数の和:334

約数の個数: 64

約数和(自身を含む): 50803200

約数和(自身を除く): 29225720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 59, 82, 118, 164, 205, 223, 236, 295, 328, 410, 446, 472, 590, 820, 892, 1115, 1180, 1640, 1784, 2230, 2360, 2419, 4460, 4838, 8920, 9143, 9676, 12095, 13157, 18286, 19352, 24190, 26314, 36572, 45715, 48380, 52628, 65785, 73144, 91430, 96760, 105256, 131570, 182860, 263140, 365720, 526280, 539437, 1078874, 2157748, 2697185, 4315496, 5394370, 10788740, 21577480]

約数ペア:

[(1, 21577480), (2, 10788740), (4, 5394370), (5, 4315496), (8, 2697185), (10, 2157748), (20, 1078874), (40, 539437), (41, 526280), (59, 365720), (82, 263140), (118, 182860), (164, 131570), (205, 105256), (223, 96760), (236, 91430), (295, 73144), (328, 65785), (410, 52628), (446, 48380), (472, 45715), (590, 36572), (820, 26314), (892, 24190), (1115, 19352), (1180, 18286), (1640, 13157), (1784, 12095), (2230, 9676), (2360, 9143), (2419, 8920), (4460, 4838)]