87211100

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1$

素因数の和:383

約数の個数: 72

約数和(自身を含む): 196862400

約数和(自身を除く): 109651300

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 89, 100, 164, 178, 205, 239, 356, 410, 445, 478, 820, 890, 956, 1025, 1195, 1780, 2050, 2225, 2390, 3649, 4100, 4450, 4780, 5975, 7298, 8900, 9799, 11950, 14596, 18245, 19598, 21271, 23900, 36490, 39196, 42542, 48995, 72980, 85084, 91225, 97990, 106355, 182450, 195980, 212710, 244975, 364900, 425420, 489950, 531775, 872111, 979900, 1063550, 1744222, 2127100, 3488444, 4360555, 8721110, 17442220, 21802775, 43605550, 87211100]

約数ペア:

[(1, 87211100), (2, 43605550), (4, 21802775), (5, 17442220), (10, 8721110), (20, 4360555), (25, 3488444), (41, 2127100), (50, 1744222), (82, 1063550), (89, 979900), (100, 872111), (164, 531775), (178, 489950), (205, 425420), (239, 364900), (356, 244975), (410, 212710), (445, 195980), (478, 182450), (820, 106355), (890, 97990), (956, 91225), (1025, 85084), (1195, 72980), (1780, 48995), (2050, 42542), (2225, 39196), (2390, 36490), (3649, 23900), (4100, 21271), (4450, 19598), (4780, 18245), (5975, 14596), (7298, 11950), (8900, 9799)]