1300400

素因数分解:

$2^4\times 5^2\times {\mathrm{3251}}^1$

素因数の和:3269

約数の個数: 30

約数和(自身を含む): 3125172

約数和(自身を除く): 1824772

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 3251, 6502, 13004, 16255, 26008, 32510, 52016, 65020, 81275, 130040, 162550, 260080, 325100, 650200, 1300400]

約数ペア:

[(1, 1300400), (2, 650200), (4, 325100), (5, 260080), (8, 162550), (10, 130040), (16, 81275), (20, 65020), (25, 52016), (40, 32510), (50, 26008), (80, 16255), (100, 13004), (200, 6502), (400, 3251)]