19990742905

素因数分解:

$5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{373}}^1\times {\mathrm{9511}}^1$

素因数の和:9926

約数の個数: 48

約数和(自身を含む): 29199861504

約数和(自身を除く): 9209118599

約数列:

[1, 5, 7, 23, 35, 49, 115, 161, 245, 373, 805, 1127, 1865, 2611, 5635, 8579, 9511, 13055, 18277, 42895, 47555, 60053, 66577, 91385, 218753, 300265, 332885, 420371, 466039, 1093765, 1531271, 2101855, 2330195, 3547603, 7656355, 10718897, 17738015, 24833221, 53594485, 81594869, 124166105, 173832547, 407974345, 571164083, 869162735, 2855820415, 3998148581, 19990742905]

約数ペア:

[(1, 19990742905), (5, 3998148581), (7, 2855820415), (23, 869162735), (35, 571164083), (49, 407974345), (115, 173832547), (161, 124166105), (245, 81594869), (373, 53594485), (805, 24833221), (1127, 17738015), (1865, 10718897), (2611, 7656355), (5635, 3547603), (8579, 2330195), (9511, 2101855), (13055, 1531271), (18277, 1093765), (42895, 466039), (47555, 420371), (60053, 332885), (66577, 300265), (91385, 218753)]