129651640

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{461}}^1$

素因数の和:640

約数の個数: 64

約数和(自身を含む): 299376000

約数和(自身を除く): 169724360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 89, 158, 178, 316, 356, 395, 445, 461, 632, 712, 790, 890, 922, 1580, 1780, 1844, 2305, 3160, 3560, 3688, 4610, 7031, 9220, 14062, 18440, 28124, 35155, 36419, 41029, 56248, 70310, 72838, 82058, 140620, 145676, 164116, 182095, 205145, 281240, 291352, 328232, 364190, 410290, 728380, 820580, 1456760, 1641160, 3241291, 6482582, 12965164, 16206455, 25930328, 32412910, 64825820, 129651640]

約数ペア:

[(1, 129651640), (2, 64825820), (4, 32412910), (5, 25930328), (8, 16206455), (10, 12965164), (20, 6482582), (40, 3241291), (79, 1641160), (89, 1456760), (158, 820580), (178, 728380), (316, 410290), (356, 364190), (395, 328232), (445, 291352), (461, 281240), (632, 205145), (712, 182095), (790, 164116), (890, 145676), (922, 140620), (1580, 82058), (1780, 72838), (1844, 70310), (2305, 56248), (3160, 41029), (3560, 36419), (3688, 35155), (4610, 28124), (7031, 18440), (9220, 14062)]