2021899900

素因数分解:

$2^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{461}}^1\times {\mathrm{719}}^1$

素因数の和:1255

約数の個数: 72

約数和(自身を含む): 4475338560

約数和(自身を除く): 2453438660

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 61, 100, 122, 244, 305, 461, 610, 719, 922, 1220, 1438, 1525, 1844, 2305, 2876, 3050, 3595, 4610, 6100, 7190, 9220, 11525, 14380, 17975, 23050, 28121, 35950, 43859, 46100, 56242, 71900, 87718, 112484, 140605, 175436, 219295, 281210, 331459, 438590, 562420, 662918, 703025, 877180, 1096475, 1325836, 1406050, 1657295, 2192950, 2812100, 3314590, 4385900, 6629180, 8286475, 16572950, 20218999, 33145900, 40437998, 80875996, 101094995, 202189990, 404379980, 505474975, 1010949950, 2021899900]

約数ペア:

[(1, 2021899900), (2, 1010949950), (4, 505474975), (5, 404379980), (10, 202189990), (20, 101094995), (25, 80875996), (50, 40437998), (61, 33145900), (100, 20218999), (122, 16572950), (244, 8286475), (305, 6629180), (461, 4385900), (610, 3314590), (719, 2812100), (922, 2192950), (1220, 1657295), (1438, 1406050), (1525, 1325836), (1844, 1096475), (2305, 877180), (2876, 703025), (3050, 662918), (3595, 562420), (4610, 438590), (6100, 331459), (7190, 281210), (9220, 219295), (11525, 175436), (14380, 140605), (17975, 112484), (23050, 87718), (28121, 71900), (35950, 56242), (43859, 46100)]