18913713

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2389}}^1$

素因数の和:2441

約数の個数: 32

約数和(自身を含む): 32121600

約数和(自身を除く): 13207887

約数列:

[1, 3, 7, 13, 21, 29, 39, 87, 91, 203, 273, 377, 609, 1131, 2389, 2639, 7167, 7917, 16723, 31057, 50169, 69281, 93171, 207843, 217399, 484967, 652197, 900653, 1454901, 2701959, 6304571, 18913713]

約数ペア:

[(1, 18913713), (3, 6304571), (7, 2701959), (13, 1454901), (21, 900653), (29, 652197), (39, 484967), (87, 217399), (91, 207843), (203, 93171), (273, 69281), (377, 50169), (609, 31057), (1131, 16723), (2389, 7917), (2639, 7167)]