19687425

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{113}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 34604928

約数和(自身を除く): 14917503

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 101, 113, 115, 303, 339, 345, 505, 565, 575, 1515, 1695, 1725, 2323, 2525, 2599, 2825, 6969, 7575, 7797, 8475, 11413, 11615, 12995, 34239, 34845, 38985, 57065, 58075, 64975, 171195, 174225, 194925, 262499, 285325, 787497, 855975, 1312495, 3937485, 6562475, 19687425]

約数ペア:

[(1, 19687425), (3, 6562475), (5, 3937485), (15, 1312495), (23, 855975), (25, 787497), (69, 285325), (75, 262499), (101, 194925), (113, 174225), (115, 171195), (303, 64975), (339, 58075), (345, 57065), (505, 38985), (565, 34845), (575, 34239), (1515, 12995), (1695, 11615), (1725, 11413), (2323, 8475), (2525, 7797), (2599, 7575), (2825, 6969)]