20214997520

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{461}}^2$

素因数の和:1005

約数の個数: 120

約数和(自身を含む): 49914695880

約数和(自身を除く): 29699698360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 41, 58, 80, 82, 116, 145, 164, 205, 232, 290, 328, 410, 461, 464, 580, 656, 820, 922, 1160, 1189, 1640, 1844, 2305, 2320, 2378, 3280, 3688, 4610, 4756, 5945, 7376, 9220, 9512, 11890, 13369, 18440, 18901, 19024, 23780, 26738, 36880, 37802, 47560, 53476, 66845, 75604, 94505, 95120, 106952, 133690, 151208, 189010, 212521, 213904, 267380, 302416, 378020, 425042, 534760, 548129, 756040, 850084, 1062605, 1069520, 1096258, 1512080, 1700168, 2125210, 2192516, 2740645, 3400336, 4250420, 4385032, 5481290, 6163109, 8500840, 8713361, 8770064, 10962580, 12326218, 17001680, 17426722, 21925160, 24652436, 30815545, 34853444, 43566805, 43850320, 49304872, 61631090, 69706888, 87133610, 98609744, 123262180, 139413776, 174267220, 246524360, 252687469, 348534440, 493048720, 505374938, 697068880, 1010749876, 1263437345, 2021499752, 2526874690, 4042999504, 5053749380, 10107498760, 20214997520]

約数ペア:

[(1, 20214997520), (2, 10107498760), (4, 5053749380), (5, 4042999504), (8, 2526874690), (10, 2021499752), (16, 1263437345), (20, 1010749876), (29, 697068880), (40, 505374938), (41, 493048720), (58, 348534440), (80, 252687469), (82, 246524360), (116, 174267220), (145, 139413776), (164, 123262180), (205, 98609744), (232, 87133610), (290, 69706888), (328, 61631090), (410, 49304872), (461, 43850320), (464, 43566805), (580, 34853444), (656, 30815545), (820, 24652436), (922, 21925160), (1160, 17426722), (1189, 17001680), (1640, 12326218), (1844, 10962580), (2305, 8770064), (2320, 8713361), (2378, 8500840), (3280, 6163109), (3688, 5481290), (4610, 4385032), (4756, 4250420), (5945, 3400336), (7376, 2740645), (9220, 2192516), (9512, 2125210), (11890, 1700168), (13369, 1512080), (18440, 1096258), (18901, 1069520), (19024, 1062605), (23780, 850084), (26738, 756040), (36880, 548129), (37802, 534760), (47560, 425042), (53476, 378020), (66845, 302416), (75604, 267380), (94505, 213904), (95120, 212521), (106952, 189010), (133690, 151208)]