66818420

素因数分解:

$2^2\times 5^1\times {\mathrm{571}}^1\times {\mathrm{5851}}^1$

素因数の和:6431

約数の個数: 24

約数和(自身を含む): 140588448

約数和(自身を除く): 73770028

約数列:

[1, 2, 4, 5, 10, 20, 571, 1142, 2284, 2855, 5710, 5851, 11420, 11702, 23404, 29255, 58510, 117020, 3340921, 6681842, 13363684, 16704605, 33409210, 66818420]

約数ペア:

[(1, 66818420), (2, 33409210), (4, 16704605), (5, 13363684), (10, 6681842), (20, 3340921), (571, 117020), (1142, 58510), (2284, 29255), (2855, 23404), (5710, 11702), (5851, 11420)]