285423980

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^2\times {\mathrm{1399}}^1$

素因数の和:1610

約数の個数: 36

約数和(自身を含む): 605816400

約数和(自身を除く): 320392420

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 1399, 2020, 2798, 5596, 6995, 10201, 13990, 20402, 27980, 40804, 51005, 102010, 141299, 204020, 282598, 565196, 706495, 1412990, 2825980, 14271199, 28542398, 57084796, 71355995, 142711990, 285423980]

約数ペア:

[(1, 285423980), (2, 142711990), (4, 71355995), (5, 57084796), (10, 28542398), (20, 14271199), (101, 2825980), (202, 1412990), (404, 706495), (505, 565196), (1010, 282598), (1399, 204020), (2020, 141299), (2798, 102010), (5596, 51005), (6995, 40804), (10201, 27980), (13990, 20402)]