309560

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:191

約数の個数: 32

約数和(自身を含む): 712800

約数和(自身を除く): 403240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 109, 142, 218, 284, 355, 436, 545, 568, 710, 872, 1090, 1420, 2180, 2840, 4360, 7739, 15478, 30956, 38695, 61912, 77390, 154780, 309560]

約数ペア:

[(1, 309560), (2, 154780), (4, 77390), (5, 61912), (8, 38695), (10, 30956), (20, 15478), (40, 7739), (71, 4360), (109, 2840), (142, 2180), (218, 1420), (284, 1090), (355, 872), (436, 710), (545, 568)]