25284520

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{307}}^1$

素因数の和:418

約数の個数: 64

約数和(自身を含む): 59875200

約数和(自身を除く): 34590680

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 71, 116, 142, 145, 232, 284, 290, 307, 355, 568, 580, 614, 710, 1160, 1228, 1420, 1535, 2059, 2456, 2840, 3070, 4118, 6140, 8236, 8903, 10295, 12280, 16472, 17806, 20590, 21797, 35612, 41180, 43594, 44515, 71224, 82360, 87188, 89030, 108985, 174376, 178060, 217970, 356120, 435940, 632113, 871880, 1264226, 2528452, 3160565, 5056904, 6321130, 12642260, 25284520]

約数ペア:

[(1, 25284520), (2, 12642260), (4, 6321130), (5, 5056904), (8, 3160565), (10, 2528452), (20, 1264226), (29, 871880), (40, 632113), (58, 435940), (71, 356120), (116, 217970), (142, 178060), (145, 174376), (232, 108985), (284, 89030), (290, 87188), (307, 82360), (355, 71224), (568, 44515), (580, 43594), (614, 41180), (710, 35612), (1160, 21797), (1228, 20590), (1420, 17806), (1535, 16472), (2059, 12280), (2456, 10295), (2840, 8903), (3070, 8236), (4118, 6140)]