20348920

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{3121}}^1$

素因数の和:3295

約数の個数: 32

約数和(自身を含む): 46080720

約数和(自身を除く): 25731800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3121, 3260, 6242, 6520, 12484, 15605, 24968, 31210, 62420, 124840, 508723, 1017446, 2034892, 2543615, 4069784, 5087230, 10174460, 20348920]

約数ペア:

[(1, 20348920), (2, 10174460), (4, 5087230), (5, 4069784), (8, 2543615), (10, 2034892), (20, 1017446), (40, 508723), (163, 124840), (326, 62420), (652, 31210), (815, 24968), (1304, 15605), (1630, 12484), (3121, 6520), (3260, 6242)]