20698825

素因数分解:

$5^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{277}}^1$

素因数の和:362

約数の個数: 36

約数和(自身を含む): 30456012

約数和(自身を除く): 9757187

約数列:

[1, 5, 7, 25, 35, 49, 61, 175, 245, 277, 305, 427, 1225, 1385, 1525, 1939, 2135, 2989, 6925, 9695, 10675, 13573, 14945, 16897, 48475, 67865, 74725, 84485, 118279, 339325, 422425, 591395, 827953, 2956975, 4139765, 20698825]

約数ペア:

[(1, 20698825), (5, 4139765), (7, 2956975), (25, 827953), (35, 591395), (49, 422425), (61, 339325), (175, 118279), (245, 84485), (277, 74725), (305, 67865), (427, 48475), (1225, 16897), (1385, 14945), (1525, 13573), (1939, 10675), (2135, 9695), (2989, 6925)]