131457980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{212029}}^1$

素因数の和:212069

約数の個数: 24

約数和(自身を含む): 284968320

約数和(自身を除く): 153510340

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 212029, 424058, 848116, 1060145, 2120290, 4240580, 6572899, 13145798, 26291596, 32864495, 65728990, 131457980]

約数ペア:

[(1, 131457980), (2, 65728990), (4, 32864495), (5, 26291596), (10, 13145798), (20, 6572899), (31, 4240580), (62, 2120290), (124, 1060145), (155, 848116), (310, 424058), (620, 212029)]