21300911425

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{6911}}^1$

素因数の和:7090

約数の個数: 48

約数和(自身を含む): 28222193664

約数和(自身を除く): 6921282239

約数列:

[1, 5, 25, 31, 41, 97, 155, 205, 485, 775, 1025, 1271, 2425, 3007, 3977, 6355, 6911, 15035, 19885, 31775, 34555, 75175, 99425, 123287, 172775, 214241, 283351, 616435, 670367, 1071205, 1416755, 3082175, 3351835, 5356025, 7083775, 8783881, 16759175, 20781377, 27485047, 43919405, 103906885, 137425235, 219597025, 519534425, 687126175, 852036457, 4260182285, 21300911425]

約数ペア:

[(1, 21300911425), (5, 4260182285), (25, 852036457), (31, 687126175), (41, 519534425), (97, 219597025), (155, 137425235), (205, 103906885), (485, 43919405), (775, 27485047), (1025, 20781377), (1271, 16759175), (2425, 8783881), (3007, 7083775), (3977, 5356025), (6355, 3351835), (6911, 3082175), (15035, 1416755), (19885, 1071205), (31775, 670367), (34555, 616435), (75175, 283351), (99425, 214241), (123287, 172775)]