64901840

素因数分解:

$2^4\times 5^1\times {\mathrm{811273}}^1$

素因数の和:811286

約数の個数: 20

約数和(自身を含む): 150896964

約数和(自身を除く): 85995124

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 811273, 1622546, 3245092, 4056365, 6490184, 8112730, 12980368, 16225460, 32450920, 64901840]

約数ペア:

[(1, 64901840), (2, 32450920), (4, 16225460), (5, 12980368), (8, 8112730), (10, 6490184), (16, 4056365), (20, 3245092), (40, 1622546), (80, 811273)]