13381975

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^2$

素因数の和:124

約数の個数: 36

約数和(自身を含む): 18842544

約数和(自身を除く): 5460569

約数列:

[1, 5, 17, 23, 25, 37, 85, 115, 185, 391, 425, 575, 629, 851, 925, 1369, 1955, 3145, 4255, 6845, 9775, 14467, 15725, 21275, 23273, 31487, 34225, 72335, 116365, 157435, 361675, 535279, 581825, 787175, 2676395, 13381975]

約数ペア:

[(1, 13381975), (5, 2676395), (17, 787175), (23, 581825), (25, 535279), (37, 361675), (85, 157435), (115, 116365), (185, 72335), (391, 34225), (425, 31487), (575, 23273), (629, 21275), (851, 15725), (925, 14467), (1369, 9775), (1955, 6845), (3145, 4255)]