20861360

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1543}}^1$

素因数の和:1582

約数の個数: 60

約数和(自身を含む): 52554672

約数和(自身を除く): 31693312

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 169, 208, 260, 338, 520, 676, 845, 1040, 1352, 1543, 1690, 2704, 3086, 3380, 6172, 6760, 7715, 12344, 13520, 15430, 20059, 24688, 30860, 40118, 61720, 80236, 100295, 123440, 160472, 200590, 260767, 320944, 401180, 521534, 802360, 1043068, 1303835, 1604720, 2086136, 2607670, 4172272, 5215340, 10430680, 20861360]

約数ペア:

[(1, 20861360), (2, 10430680), (4, 5215340), (5, 4172272), (8, 2607670), (10, 2086136), (13, 1604720), (16, 1303835), (20, 1043068), (26, 802360), (40, 521534), (52, 401180), (65, 320944), (80, 260767), (104, 200590), (130, 160472), (169, 123440), (208, 100295), (260, 80236), (338, 61720), (520, 40118), (676, 30860), (845, 24688), (1040, 20059), (1352, 15430), (1543, 13520), (1690, 12344), (2704, 7715), (3086, 6760), (3380, 6172)]