221497990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{1087}}^1$

素因数の和:1213

約数の個数: 64

約数和(自身を含む): 473776128

約数和(自身を除く): 252278138

約数列:

[1, 2, 5, 7, 10, 14, 35, 41, 70, 71, 82, 142, 205, 287, 355, 410, 497, 574, 710, 994, 1087, 1435, 2174, 2485, 2870, 2911, 4970, 5435, 5822, 7609, 10870, 14555, 15218, 20377, 29110, 38045, 40754, 44567, 76090, 77177, 89134, 101885, 154354, 203770, 222835, 311969, 385885, 445670, 540239, 623938, 771770, 1080478, 1559845, 2701195, 3119690, 3164257, 5402390, 6328514, 15821285, 22149799, 31642570, 44299598, 110748995, 221497990]

約数ペア:

[(1, 221497990), (2, 110748995), (5, 44299598), (7, 31642570), (10, 22149799), (14, 15821285), (35, 6328514), (41, 5402390), (70, 3164257), (71, 3119690), (82, 2701195), (142, 1559845), (205, 1080478), (287, 771770), (355, 623938), (410, 540239), (497, 445670), (574, 385885), (710, 311969), (994, 222835), (1087, 203770), (1435, 154354), (2174, 101885), (2485, 89134), (2870, 77177), (2911, 76090), (4970, 44567), (5435, 40754), (5822, 38045), (7609, 29110), (10870, 20377), (14555, 15218)]