20149845

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{2549}}^1$

素因数の和:2605

約数の個数: 32

約数和(自身を含む): 35251200

約数和(自身を除く): 15101355

約数列:

[1, 3, 5, 15, 17, 31, 51, 85, 93, 155, 255, 465, 527, 1581, 2549, 2635, 7647, 7905, 12745, 38235, 43333, 79019, 129999, 216665, 237057, 395095, 649995, 1185285, 1343323, 4029969, 6716615, 20149845]

約数ペア:

[(1, 20149845), (3, 6716615), (5, 4029969), (15, 1343323), (17, 1185285), (31, 649995), (51, 395095), (85, 237057), (93, 216665), (155, 129999), (255, 79019), (465, 43333), (527, 38235), (1581, 12745), (2549, 7905), (2635, 7647)]