840390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:376

約数の個数: 32

約数和(自身を含む): 2043360

約数和(自身を除く): 1202970

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 109, 218, 257, 327, 514, 545, 654, 771, 1090, 1285, 1542, 1635, 2570, 3270, 3855, 7710, 28013, 56026, 84039, 140065, 168078, 280130, 420195, 840390]

約数ペア:

[(1, 840390), (2, 420195), (3, 280130), (5, 168078), (6, 140065), (10, 84039), (15, 56026), (30, 28013), (109, 7710), (218, 3855), (257, 3270), (327, 2570), (514, 1635), (545, 1542), (654, 1285), (771, 1090)]