217490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1$

素因数の和:266

約数の個数: 32

約数和(自身を含む): 483840

約数和(自身を除く): 266350

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 239, 455, 478, 910, 1195, 1673, 2390, 3107, 3346, 6214, 8365, 15535, 16730, 21749, 31070, 43498, 108745, 217490]

約数ペア:

[(1, 217490), (2, 108745), (5, 43498), (7, 31070), (10, 21749), (13, 16730), (14, 15535), (26, 8365), (35, 6214), (65, 3346), (70, 3107), (91, 2390), (130, 1673), (182, 1195), (239, 910), (455, 478)]