128441360

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{20323}}^1$

素因数の和:20415

約数の個数: 40

約数和(自身を含む): 302421120

約数和(自身を除く): 173979760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 20323, 40646, 81292, 101615, 162584, 203230, 325168, 406460, 812920, 1605517, 1625840, 3211034, 6422068, 8027585, 12844136, 16055170, 25688272, 32110340, 64220680, 128441360]

約数ペア:

[(1, 128441360), (2, 64220680), (4, 32110340), (5, 25688272), (8, 16055170), (10, 12844136), (16, 8027585), (20, 6422068), (40, 3211034), (79, 1625840), (80, 1605517), (158, 812920), (316, 406460), (395, 325168), (632, 203230), (790, 162584), (1264, 101615), (1580, 81292), (3160, 40646), (6320, 20323)]