19781488

素因数分解:

$2^4\times {\mathrm{191}}^1\times {\mathrm{6473}}^1$

素因数の和:6672

約数の個数: 20

約数和(自身を含む): 38533248

約数和(自身を除く): 18751760

約数列:

[1, 2, 4, 8, 16, 191, 382, 764, 1528, 3056, 6473, 12946, 25892, 51784, 103568, 1236343, 2472686, 4945372, 9890744, 19781488]

約数ペア:

[(1, 19781488), (2, 9890744), (4, 4945372), (8, 2472686), (16, 1236343), (191, 103568), (382, 51784), (764, 25892), (1528, 12946), (3056, 6473)]