21500128

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{51683}}^1$

素因数の和:51706

約数の個数: 24

約数和(自身を含む): 45585288

約数和(自身を除く): 24085160

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 416, 51683, 103366, 206732, 413464, 671879, 826928, 1343758, 1653856, 2687516, 5375032, 10750064, 21500128]

約数ペア:

[(1, 21500128), (2, 10750064), (4, 5375032), (8, 2687516), (13, 1653856), (16, 1343758), (26, 826928), (32, 671879), (52, 413464), (104, 206732), (208, 103366), (416, 51683)]