21268455

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{3761}}^1$

素因数の和:3811

約数の個数: 32

約数和(自身を含む): 37920960

約数和(自身を除く): 16652505

約数列:

[1, 3, 5, 13, 15, 29, 39, 65, 87, 145, 195, 377, 435, 1131, 1885, 3761, 5655, 11283, 18805, 48893, 56415, 109069, 146679, 244465, 327207, 545345, 733395, 1417897, 1636035, 4253691, 7089485, 21268455]

約数ペア:

[(1, 21268455), (3, 7089485), (5, 4253691), (13, 1636035), (15, 1417897), (29, 733395), (39, 545345), (65, 327207), (87, 244465), (145, 146679), (195, 109069), (377, 56415), (435, 48893), (1131, 18805), (1885, 11283), (3761, 5655)]