18191901

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1801}}^1$

素因数の和:1861

約数の個数: 32

約数和(自身を含む): 30677248

約数和(自身を除く): 12485347

約数列:

[1, 3, 7, 13, 21, 37, 39, 91, 111, 259, 273, 481, 777, 1443, 1801, 3367, 5403, 10101, 12607, 23413, 37821, 66637, 70239, 163891, 199911, 466459, 491673, 866281, 1399377, 2598843, 6063967, 18191901]

約数ペア:

[(1, 18191901), (3, 6063967), (7, 2598843), (13, 1399377), (21, 866281), (37, 491673), (39, 466459), (91, 199911), (111, 163891), (259, 70239), (273, 66637), (481, 37821), (777, 23413), (1443, 12607), (1801, 10101), (3367, 5403)]