20974110

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{229}}^1$

素因数の和:353

約数の個数: 64

約数和(自身を含む): 52462080

約数和(自身を除く): 31487970

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 71, 86, 129, 142, 213, 215, 229, 258, 355, 426, 430, 458, 645, 687, 710, 1065, 1145, 1290, 1374, 2130, 2290, 3053, 3435, 6106, 6870, 9159, 9847, 15265, 16259, 18318, 19694, 29541, 30530, 32518, 45795, 48777, 49235, 59082, 81295, 91590, 97554, 98470, 147705, 162590, 243885, 295410, 487770, 699137, 1398274, 2097411, 3495685, 4194822, 6991370, 10487055, 20974110]

約数ペア:

[(1, 20974110), (2, 10487055), (3, 6991370), (5, 4194822), (6, 3495685), (10, 2097411), (15, 1398274), (30, 699137), (43, 487770), (71, 295410), (86, 243885), (129, 162590), (142, 147705), (213, 98470), (215, 97554), (229, 91590), (258, 81295), (355, 59082), (426, 49235), (430, 48777), (458, 45795), (645, 32518), (687, 30530), (710, 29541), (1065, 19694), (1145, 18318), (1290, 16259), (1374, 15265), (2130, 9847), (2290, 9159), (3053, 6870), (3435, 6106)]