21155700

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{97}}^1\times {\mathrm{727}}^1$

素因数の和:841

約数の個数: 72

約数和(自身を含む): 61926592

約数和(自身を除く): 40770892

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 97, 100, 150, 194, 291, 300, 388, 485, 582, 727, 970, 1164, 1454, 1455, 1940, 2181, 2425, 2908, 2910, 3635, 4362, 4850, 5820, 7270, 7275, 8724, 9700, 10905, 14540, 14550, 18175, 21810, 29100, 36350, 43620, 54525, 70519, 72700, 109050, 141038, 211557, 218100, 282076, 352595, 423114, 705190, 846228, 1057785, 1410380, 1762975, 2115570, 3525950, 4231140, 5288925, 7051900, 10577850, 21155700]

約数ペア:

[(1, 21155700), (2, 10577850), (3, 7051900), (4, 5288925), (5, 4231140), (6, 3525950), (10, 2115570), (12, 1762975), (15, 1410380), (20, 1057785), (25, 846228), (30, 705190), (50, 423114), (60, 352595), (75, 282076), (97, 218100), (100, 211557), (150, 141038), (194, 109050), (291, 72700), (300, 70519), (388, 54525), (485, 43620), (582, 36350), (727, 29100), (970, 21810), (1164, 18175), (1454, 14550), (1455, 14540), (1940, 10905), (2181, 9700), (2425, 8724), (2908, 7275), (2910, 7270), (3635, 5820), (4362, 4850)]