21519090

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{1321}}^1$

素因数の和:1515

約数の個数: 48

約数和(自身を含む): 56301336

約数和(自身を除く): 34782246

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 181, 362, 543, 905, 1086, 1321, 1629, 1810, 2642, 2715, 3258, 3963, 5430, 6605, 7926, 8145, 11889, 13210, 16290, 19815, 23778, 39630, 59445, 118890, 239101, 478202, 717303, 1195505, 1434606, 2151909, 2391010, 3586515, 4303818, 7173030, 10759545, 21519090]

約数ペア:

[(1, 21519090), (2, 10759545), (3, 7173030), (5, 4303818), (6, 3586515), (9, 2391010), (10, 2151909), (15, 1434606), (18, 1195505), (30, 717303), (45, 478202), (90, 239101), (181, 118890), (362, 59445), (543, 39630), (905, 23778), (1086, 19815), (1321, 16290), (1629, 13210), (1810, 11889), (2642, 8145), (2715, 7926), (3258, 6605), (3963, 5430)]