64216400

素因数分解:

$2^4\times 5^2\times {\mathrm{160541}}^1$

素因数の和:160559

約数の個数: 30

約数和(自身を含む): 154280862

約数和(自身を除く): 90064462

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 160541, 321082, 642164, 802705, 1284328, 1605410, 2568656, 3210820, 4013525, 6421640, 8027050, 12843280, 16054100, 32108200, 64216400]

約数ペア:

[(1, 64216400), (2, 32108200), (4, 16054100), (5, 12843280), (8, 8027050), (10, 6421640), (16, 4013525), (20, 3210820), (25, 2568656), (40, 1605410), (50, 1284328), (80, 802705), (100, 642164), (200, 321082), (400, 160541)]