19874504

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:198

約数の個数: 64

約数和(自身を含む): 42336000

約数和(自身を除く): 22461496

約数列:

[1, 2, 4, 8, 13, 26, 41, 52, 59, 79, 82, 104, 118, 158, 164, 236, 316, 328, 472, 533, 632, 767, 1027, 1066, 1534, 2054, 2132, 2419, 3068, 3239, 4108, 4264, 4661, 4838, 6136, 6478, 8216, 9322, 9676, 12956, 18644, 19352, 25912, 31447, 37288, 42107, 60593, 62894, 84214, 121186, 125788, 168428, 191101, 242372, 251576, 336856, 382202, 484744, 764404, 1528808, 2484313, 4968626, 9937252, 19874504]

約数ペア:

[(1, 19874504), (2, 9937252), (4, 4968626), (8, 2484313), (13, 1528808), (26, 764404), (41, 484744), (52, 382202), (59, 336856), (79, 251576), (82, 242372), (104, 191101), (118, 168428), (158, 125788), (164, 121186), (236, 84214), (316, 62894), (328, 60593), (472, 42107), (533, 37288), (632, 31447), (767, 25912), (1027, 19352), (1066, 18644), (1534, 12956), (2054, 9676), (2132, 9322), (2419, 8216), (3068, 6478), (3239, 6136), (4108, 4838), (4264, 4661)]