28717820

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1\times {\mathrm{131}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 61937568

約数和(自身を除く): 33219748

約数列:

[1, 2, 4, 5, 10, 20, 97, 113, 131, 194, 226, 262, 388, 452, 485, 524, 565, 655, 970, 1130, 1310, 1940, 2260, 2620, 10961, 12707, 14803, 21922, 25414, 29606, 43844, 50828, 54805, 59212, 63535, 74015, 109610, 127070, 148030, 219220, 254140, 296060, 1435891, 2871782, 5743564, 7179455, 14358910, 28717820]

約数ペア:

[(1, 28717820), (2, 14358910), (4, 7179455), (5, 5743564), (10, 2871782), (20, 1435891), (97, 296060), (113, 254140), (131, 219220), (194, 148030), (226, 127070), (262, 109610), (388, 74015), (452, 63535), (485, 59212), (524, 54805), (565, 50828), (655, 43844), (970, 29606), (1130, 25414), (1310, 21922), (1940, 14803), (2260, 12707), (2620, 10961)]