21981566159

素因数分解:

$7^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{3313}}^1$

素因数の和:3484

約数の個数: 48

約数和(自身を含む): 27128775168

約数和(自身を除く): 5147209009

約数列:

[1, 7, 43, 47, 49, 67, 301, 329, 469, 2021, 2107, 2303, 2881, 3149, 3283, 3313, 14147, 20167, 22043, 23191, 99029, 135407, 141169, 142459, 154301, 155711, 162337, 221971, 947849, 997213, 1089977, 1553797, 6634943, 6695573, 6980491, 7629839, 9544753, 10432637, 10876579, 46869011, 66813271, 73028459, 328083077, 448603391, 467692897, 511199213, 3140223737, 21981566159]

約数ペア:

[(1, 21981566159), (7, 3140223737), (43, 511199213), (47, 467692897), (49, 448603391), (67, 328083077), (301, 73028459), (329, 66813271), (469, 46869011), (2021, 10876579), (2107, 10432637), (2303, 9544753), (2881, 7629839), (3149, 6980491), (3283, 6695573), (3313, 6634943), (14147, 1553797), (20167, 1089977), (22043, 997213), (23191, 947849), (99029, 221971), (135407, 162337), (141169, 155711), (142459, 154301)]