64180400

素因数分解:

$2^4\times 5^2\times {\mathrm{281}}^1\times {\mathrm{571}}^1$

素因数の和:870

約数の個数: 60

約数和(自身を含む): 155013144

約数和(自身を除く): 90832744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 281, 400, 562, 571, 1124, 1142, 1405, 2248, 2284, 2810, 2855, 4496, 4568, 5620, 5710, 7025, 9136, 11240, 11420, 14050, 14275, 22480, 22840, 28100, 28550, 45680, 56200, 57100, 112400, 114200, 160451, 228400, 320902, 641804, 802255, 1283608, 1604510, 2567216, 3209020, 4011275, 6418040, 8022550, 12836080, 16045100, 32090200, 64180400]

約数ペア:

[(1, 64180400), (2, 32090200), (4, 16045100), (5, 12836080), (8, 8022550), (10, 6418040), (16, 4011275), (20, 3209020), (25, 2567216), (40, 1604510), (50, 1283608), (80, 802255), (100, 641804), (200, 320902), (281, 228400), (400, 160451), (562, 114200), (571, 112400), (1124, 57100), (1142, 56200), (1405, 45680), (2248, 28550), (2284, 28100), (2810, 22840), (2855, 22480), (4496, 14275), (4568, 14050), (5620, 11420), (5710, 11240), (7025, 9136)]