156959680

素因数分解:

$2^6\times 5^1\times {\mathrm{490499}}^1$

素因数の和:490516

約数の個数: 28

約数和(自身を含む): 373761000

約数和(自身を除く): 216801320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 490499, 980998, 1961996, 2452495, 3923992, 4904990, 7847984, 9809980, 15695968, 19619960, 31391936, 39239920, 78479840, 156959680]

約数ペア:

[(1, 156959680), (2, 78479840), (4, 39239920), (5, 31391936), (8, 19619960), (10, 15695968), (16, 9809980), (20, 7847984), (32, 4904990), (40, 3923992), (64, 2452495), (80, 1961996), (160, 980998), (320, 490499)]