21303700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{181}}^1$

素因数の和:313

約数の個数: 72

約数和(自身を含む): 51184224

約数和(自身を除く): 29880524

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 107, 110, 181, 214, 220, 275, 362, 428, 535, 550, 724, 905, 1070, 1100, 1177, 1810, 1991, 2140, 2354, 2675, 3620, 3982, 4525, 4708, 5350, 5885, 7964, 9050, 9955, 10700, 11770, 18100, 19367, 19910, 23540, 29425, 38734, 39820, 49775, 58850, 77468, 96835, 99550, 117700, 193670, 199100, 213037, 387340, 426074, 484175, 852148, 968350, 1065185, 1936700, 2130370, 4260740, 5325925, 10651850, 21303700]

約数ペア:

[(1, 21303700), (2, 10651850), (4, 5325925), (5, 4260740), (10, 2130370), (11, 1936700), (20, 1065185), (22, 968350), (25, 852148), (44, 484175), (50, 426074), (55, 387340), (100, 213037), (107, 199100), (110, 193670), (181, 117700), (214, 99550), (220, 96835), (275, 77468), (362, 58850), (428, 49775), (535, 39820), (550, 38734), (724, 29425), (905, 23540), (1070, 19910), (1100, 19367), (1177, 18100), (1810, 11770), (1991, 10700), (2140, 9955), (2354, 9050), (2675, 7964), (3620, 5885), (3982, 5350), (4525, 4708)]