20878438

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{659}}^1$

素因数の和:772

約数の個数: 32

約数和(自身を含む): 37509120

約数和(自身を除く): 16630682

約数列:

[1, 2, 7, 14, 31, 62, 73, 146, 217, 434, 511, 659, 1022, 1318, 2263, 4526, 4613, 9226, 15841, 20429, 31682, 40858, 48107, 96214, 143003, 286006, 336749, 673498, 1491317, 2982634, 10439219, 20878438]

約数ペア:

[(1, 20878438), (2, 10439219), (7, 2982634), (14, 1491317), (31, 673498), (62, 336749), (73, 286006), (146, 143003), (217, 96214), (434, 48107), (511, 40858), (659, 31682), (1022, 20429), (1318, 15841), (2263, 9226), (4526, 4613)]