202121800

素因数分解:

$2^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{157}}^2$

素因数の和:371

約数の個数: 72

約数和(自身を含む): 484480710

約数和(自身を除く): 282358910

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 157, 164, 200, 205, 314, 328, 410, 628, 785, 820, 1025, 1256, 1570, 1640, 2050, 3140, 3925, 4100, 6280, 6437, 7850, 8200, 12874, 15700, 24649, 25748, 31400, 32185, 49298, 51496, 64370, 98596, 123245, 128740, 160925, 197192, 246490, 257480, 321850, 492980, 616225, 643700, 985960, 1010609, 1232450, 1287400, 2021218, 2464900, 4042436, 4929800, 5053045, 8084872, 10106090, 20212180, 25265225, 40424360, 50530450, 101060900, 202121800]

約数ペア:

[(1, 202121800), (2, 101060900), (4, 50530450), (5, 40424360), (8, 25265225), (10, 20212180), (20, 10106090), (25, 8084872), (40, 5053045), (41, 4929800), (50, 4042436), (82, 2464900), (100, 2021218), (157, 1287400), (164, 1232450), (200, 1010609), (205, 985960), (314, 643700), (328, 616225), (410, 492980), (628, 321850), (785, 257480), (820, 246490), (1025, 197192), (1256, 160925), (1570, 128740), (1640, 123245), (2050, 98596), (3140, 64370), (3925, 51496), (4100, 49298), (6280, 32185), (6437, 31400), (7850, 25748), (8200, 24649), (12874, 15700)]