20083850

素因数分解:

$2^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1$

素因数の和:251

約数の個数: 48

約数和(自身を含む): 39044376

約数和(自身を除く): 18960526

約数列:

[1, 2, 5, 10, 25, 41, 50, 82, 97, 101, 194, 202, 205, 410, 485, 505, 970, 1010, 1025, 2050, 2425, 2525, 3977, 4141, 4850, 5050, 7954, 8282, 9797, 19594, 19885, 20705, 39770, 41410, 48985, 97970, 99425, 103525, 198850, 207050, 244925, 401677, 489850, 803354, 2008385, 4016770, 10041925, 20083850]

約数ペア:

[(1, 20083850), (2, 10041925), (5, 4016770), (10, 2008385), (25, 803354), (41, 489850), (50, 401677), (82, 244925), (97, 207050), (101, 198850), (194, 103525), (202, 99425), (205, 97970), (410, 48985), (485, 41410), (505, 39770), (970, 20705), (1010, 19885), (1025, 19594), (2050, 9797), (2425, 8282), (2525, 7954), (3977, 5050), (4141, 4850)]