217878100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{4831}}^1$

素因数の和:4897

約数の個数: 72

約数和(自身を含む): 528466176

約数和(自身を除く): 310588076

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 41, 44, 50, 55, 82, 100, 110, 164, 205, 220, 275, 410, 451, 550, 820, 902, 1025, 1100, 1804, 2050, 2255, 4100, 4510, 4831, 9020, 9662, 11275, 19324, 22550, 24155, 45100, 48310, 53141, 96620, 106282, 120775, 198071, 212564, 241550, 265705, 396142, 483100, 531410, 792284, 990355, 1062820, 1328525, 1980710, 2178781, 2657050, 3961420, 4357562, 4951775, 5314100, 8715124, 9903550, 10893905, 19807100, 21787810, 43575620, 54469525, 108939050, 217878100]

約数ペア:

[(1, 217878100), (2, 108939050), (4, 54469525), (5, 43575620), (10, 21787810), (11, 19807100), (20, 10893905), (22, 9903550), (25, 8715124), (41, 5314100), (44, 4951775), (50, 4357562), (55, 3961420), (82, 2657050), (100, 2178781), (110, 1980710), (164, 1328525), (205, 1062820), (220, 990355), (275, 792284), (410, 531410), (451, 483100), (550, 396142), (820, 265705), (902, 241550), (1025, 212564), (1100, 198071), (1804, 120775), (2050, 106282), (2255, 96620), (4100, 53141), (4510, 48310), (4831, 45100), (9020, 24155), (9662, 22550), (11275, 19324)]