404860

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{653}}^1$

素因数の和:693

約数の個数: 24

約数和(自身を含む): 878976

約数和(自身を除く): 474116

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 653, 1306, 2612, 3265, 6530, 13060, 20243, 40486, 80972, 101215, 202430, 404860]

約数ペア:

[(1, 404860), (2, 202430), (4, 101215), (5, 80972), (10, 40486), (20, 20243), (31, 13060), (62, 6530), (124, 3265), (155, 2612), (310, 1306), (620, 653)]