66920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{239}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 172800

約数和(自身を除く): 105880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 239, 280, 478, 956, 1195, 1673, 1912, 2390, 3346, 4780, 6692, 8365, 9560, 13384, 16730, 33460, 66920]

約数ペア:

[(1, 66920), (2, 33460), (4, 16730), (5, 13384), (7, 9560), (8, 8365), (10, 6692), (14, 4780), (20, 3346), (28, 2390), (35, 1912), (40, 1673), (56, 1195), (70, 956), (140, 478), (239, 280)]