128277040

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{20297}}^1$

素因数の和:20389

約数の個数: 40

約数和(自身を含む): 302034240

約数和(自身を除く): 173757200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 20297, 40594, 81188, 101485, 162376, 202970, 324752, 405940, 811880, 1603463, 1623760, 3206926, 6413852, 8017315, 12827704, 16034630, 25655408, 32069260, 64138520, 128277040]

約数ペア:

[(1, 128277040), (2, 64138520), (4, 32069260), (5, 25655408), (8, 16034630), (10, 12827704), (16, 8017315), (20, 6413852), (40, 3206926), (79, 1623760), (80, 1603463), (158, 811880), (316, 405940), (395, 324752), (632, 202970), (790, 162376), (1264, 101485), (1580, 81188), (3160, 40594), (6320, 20297)]