678652

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1$

素因数の和:469

約数の個数: 24

約数和(自身を含む): 1323392

約数和(自身を除く): 644740

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 421, 806, 842, 1612, 1684, 5473, 10946, 13051, 21892, 26102, 52204, 169663, 339326, 678652]

約数ペア:

[(1, 678652), (2, 339326), (4, 169663), (13, 52204), (26, 26102), (31, 21892), (52, 13051), (62, 10946), (124, 5473), (403, 1684), (421, 1612), (806, 842)]