202020100

素因数分解:

$2^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{811}}^1$

素因数の和:925

約数の個数: 72

約数和(自身を含む): 456720768

約数和(自身を除く): 254700668

約数列:

[1, 2, 4, 5, 10, 20, 25, 47, 50, 53, 94, 100, 106, 188, 212, 235, 265, 470, 530, 811, 940, 1060, 1175, 1325, 1622, 2350, 2491, 2650, 3244, 4055, 4700, 4982, 5300, 8110, 9964, 12455, 16220, 20275, 24910, 38117, 40550, 42983, 49820, 62275, 76234, 81100, 85966, 124550, 152468, 171932, 190585, 214915, 249100, 381170, 429830, 762340, 859660, 952925, 1074575, 1905850, 2020201, 2149150, 3811700, 4040402, 4298300, 8080804, 10101005, 20202010, 40404020, 50505025, 101010050, 202020100]

約数ペア:

[(1, 202020100), (2, 101010050), (4, 50505025), (5, 40404020), (10, 20202010), (20, 10101005), (25, 8080804), (47, 4298300), (50, 4040402), (53, 3811700), (94, 2149150), (100, 2020201), (106, 1905850), (188, 1074575), (212, 952925), (235, 859660), (265, 762340), (470, 429830), (530, 381170), (811, 249100), (940, 214915), (1060, 190585), (1175, 171932), (1325, 152468), (1622, 124550), (2350, 85966), (2491, 81100), (2650, 76234), (3244, 62275), (4055, 49820), (4700, 42983), (4982, 40550), (5300, 38117), (8110, 24910), (9964, 20275), (12455, 16220)]