220157720

素因数分解:

$2^3\times 5^1\times {\mathrm{1693}}^1\times {\mathrm{3251}}^1$

素因数の和:4955

約数の個数: 32

約数和(自身を含む): 495799920

約数和(自身を除く): 275642200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1693, 3251, 3386, 6502, 6772, 8465, 13004, 13544, 16255, 16930, 26008, 32510, 33860, 65020, 67720, 130040, 5503943, 11007886, 22015772, 27519715, 44031544, 55039430, 110078860, 220157720]

約数ペア:

[(1, 220157720), (2, 110078860), (4, 55039430), (5, 44031544), (8, 27519715), (10, 22015772), (20, 11007886), (40, 5503943), (1693, 130040), (3251, 67720), (3386, 65020), (6502, 33860), (6772, 32510), (8465, 26008), (13004, 16930), (13544, 16255)]