20394250

素因数分解:

$2^1\times 5^3\times {\mathrm{29}}^2\times {\mathrm{97}}^1$

素因数の和:172

約数の個数: 48

約数和(自身を含む): 39947544

約数和(自身を除く): 19553294

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 97, 125, 145, 194, 250, 290, 485, 725, 841, 970, 1450, 1682, 2425, 2813, 3625, 4205, 4850, 5626, 7250, 8410, 12125, 14065, 21025, 24250, 28130, 42050, 70325, 81577, 105125, 140650, 163154, 210250, 351625, 407885, 703250, 815770, 2039425, 4078850, 10197125, 20394250]

約数ペア:

[(1, 20394250), (2, 10197125), (5, 4078850), (10, 2039425), (25, 815770), (29, 703250), (50, 407885), (58, 351625), (97, 210250), (125, 163154), (145, 140650), (194, 105125), (250, 81577), (290, 70325), (485, 42050), (725, 28130), (841, 24250), (970, 21025), (1450, 14065), (1682, 12125), (2425, 8410), (2813, 7250), (3625, 5626), (4205, 4850)]