66921320

素因数分解:

$2^3\times 5^1\times {\mathrm{971}}^1\times {\mathrm{1723}}^1$

素因数の和:2705

約数の個数: 32

約数和(自身を含む): 150815520

約数和(自身を除く): 83894200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 971, 1723, 1942, 3446, 3884, 4855, 6892, 7768, 8615, 9710, 13784, 17230, 19420, 34460, 38840, 68920, 1673033, 3346066, 6692132, 8365165, 13384264, 16730330, 33460660, 66921320]

約数ペア:

[(1, 66921320), (2, 33460660), (4, 16730330), (5, 13384264), (8, 8365165), (10, 6692132), (20, 3346066), (40, 1673033), (971, 68920), (1723, 38840), (1942, 34460), (3446, 19420), (3884, 17230), (4855, 13784), (6892, 9710), (7768, 8615)]