133840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{239}}^1$

素因数の和:259

約数の個数: 40

約数和(自身を含む): 357120

約数和(自身を除く): 223280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 239, 280, 478, 560, 956, 1195, 1673, 1912, 2390, 3346, 3824, 4780, 6692, 8365, 9560, 13384, 16730, 19120, 26768, 33460, 66920, 133840]

約数ペア:

[(1, 133840), (2, 66920), (4, 33460), (5, 26768), (7, 19120), (8, 16730), (10, 13384), (14, 9560), (16, 8365), (20, 6692), (28, 4780), (35, 3824), (40, 3346), (56, 2390), (70, 1912), (80, 1673), (112, 1195), (140, 956), (239, 560), (280, 478)]