201820840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{388117}}^1$

素因数の和:388141

約数の個数: 32

約数和(自身を含む): 489028680

約数和(自身を除く): 287207840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 388117, 776234, 1552468, 1940585, 3104936, 3881170, 5045521, 7762340, 10091042, 15524680, 20182084, 25227605, 40364168, 50455210, 100910420, 201820840]

約数ペア:

[(1, 201820840), (2, 100910420), (4, 50455210), (5, 40364168), (8, 25227605), (10, 20182084), (13, 15524680), (20, 10091042), (26, 7762340), (40, 5045521), (52, 3881170), (65, 3104936), (104, 1940585), (130, 1552468), (260, 776234), (520, 388117)]