21581566657

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{47389}}^1$

素因数の和:47545

約数の個数: 32

約数和(自身を含む): 27023673600

約数和(自身を除く): 5442106943

約数列:

[1, 7, 17, 43, 89, 119, 301, 623, 731, 1513, 3827, 5117, 10591, 26789, 47389, 65059, 331723, 455413, 805613, 2037727, 4217621, 5639291, 14264089, 29523347, 34641359, 71699557, 181357703, 242489513, 501896899, 1269503921, 3083080951, 21581566657]

約数ペア:

[(1, 21581566657), (7, 3083080951), (17, 1269503921), (43, 501896899), (89, 242489513), (119, 181357703), (301, 71699557), (623, 34641359), (731, 29523347), (1513, 14264089), (3827, 5639291), (5117, 4217621), (10591, 2037727), (26789, 805613), (47389, 455413), (65059, 331723)]