405767980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{419}}^1\times {\mathrm{1181}}^1$

素因数の和:1650

約数の個数: 48

約数和(自身を含む): 875720160

約数和(自身を除く): 469952180

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 419, 820, 838, 1181, 1676, 2095, 2362, 4190, 4724, 5905, 8380, 11810, 17179, 23620, 34358, 48421, 68716, 85895, 96842, 171790, 193684, 242105, 343580, 484210, 494839, 968420, 989678, 1979356, 2474195, 4948390, 9896780, 20288399, 40576798, 81153596, 101441995, 202883990, 405767980]

約数ペア:

[(1, 405767980), (2, 202883990), (4, 101441995), (5, 81153596), (10, 40576798), (20, 20288399), (41, 9896780), (82, 4948390), (164, 2474195), (205, 1979356), (410, 989678), (419, 968420), (820, 494839), (838, 484210), (1181, 343580), (1676, 242105), (2095, 193684), (2362, 171790), (4190, 96842), (4724, 85895), (5905, 68716), (8380, 48421), (11810, 34358), (17179, 23620)]