28100000

素因数分解:

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

素因数の和:316

約数の個数: 72

約数和(自身を含む): 69393996

約数和(自身を除く): 41293996

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 281, 400, 500, 562, 625, 800, 1000, 1124, 1250, 1405, 2000, 2248, 2500, 2810, 3125, 4000, 4496, 5000, 5620, 6250, 7025, 8992, 10000, 11240, 12500, 14050, 20000, 22480, 25000, 28100, 35125, 44960, 50000, 56200, 70250, 100000, 112400, 140500, 175625, 224800, 281000, 351250, 562000, 702500, 878125, 1124000, 1405000, 1756250, 2810000, 3512500, 5620000, 7025000, 14050000, 28100000]

約数ペア:

[(1, 28100000), (2, 14050000), (4, 7025000), (5, 5620000), (8, 3512500), (10, 2810000), (16, 1756250), (20, 1405000), (25, 1124000), (32, 878125), (40, 702500), (50, 562000), (80, 351250), (100, 281000), (125, 224800), (160, 175625), (200, 140500), (250, 112400), (281, 100000), (400, 70250), (500, 56200), (562, 50000), (625, 44960), (800, 35125), (1000, 28100), (1124, 25000), (1250, 22480), (1405, 20000), (2000, 14050), (2248, 12500), (2500, 11240), (2810, 10000), (3125, 8992), (4000, 7025), (4496, 6250), (5000, 5620)]