7980400

素因数分解:

$2^4\times 5^2\times {\mathrm{71}}^1\times {\mathrm{281}}^1$

素因数の和:370

約数の個数: 60

約数和(自身を含む): 19512144

約数和(自身を除く): 11531744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 71, 80, 100, 142, 200, 281, 284, 355, 400, 562, 568, 710, 1124, 1136, 1405, 1420, 1775, 2248, 2810, 2840, 3550, 4496, 5620, 5680, 7025, 7100, 11240, 14050, 14200, 19951, 22480, 28100, 28400, 39902, 56200, 79804, 99755, 112400, 159608, 199510, 319216, 399020, 498775, 798040, 997550, 1596080, 1995100, 3990200, 7980400]

約数ペア:

[(1, 7980400), (2, 3990200), (4, 1995100), (5, 1596080), (8, 997550), (10, 798040), (16, 498775), (20, 399020), (25, 319216), (40, 199510), (50, 159608), (71, 112400), (80, 99755), (100, 79804), (142, 56200), (200, 39902), (281, 28400), (284, 28100), (355, 22480), (400, 19951), (562, 14200), (568, 14050), (710, 11240), (1124, 7100), (1136, 7025), (1405, 5680), (1420, 5620), (1775, 4496), (2248, 3550), (2810, 2840)]