1405000

素因数分解:

$2^3\times 5^4\times {\mathrm{281}}^1$

素因数の和:307

約数の個数: 40

約数和(自身を含む): 3303630

約数和(自身を除く): 1898630

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 281, 500, 562, 625, 1000, 1124, 1250, 1405, 2248, 2500, 2810, 5000, 5620, 7025, 11240, 14050, 28100, 35125, 56200, 70250, 140500, 175625, 281000, 351250, 702500, 1405000]

約数ペア:

[(1, 1405000), (2, 702500), (4, 351250), (5, 281000), (8, 175625), (10, 140500), (20, 70250), (25, 56200), (40, 35125), (50, 28100), (100, 14050), (125, 11240), (200, 7025), (250, 5620), (281, 5000), (500, 2810), (562, 2500), (625, 2248), (1000, 1405), (1124, 1250)]