81321880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{119591}}^1$

素因数の和:119619

約数の個数: 32

約数和(自身を含む): 193739040

約数和(自身を除く): 112417160

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 119591, 239182, 478364, 597955, 956728, 1195910, 2033047, 2391820, 4066094, 4783640, 8132188, 10165235, 16264376, 20330470, 40660940, 81321880]

約数ペア:

[(1, 81321880), (2, 40660940), (4, 20330470), (5, 16264376), (8, 10165235), (10, 8132188), (17, 4783640), (20, 4066094), (34, 2391820), (40, 2033047), (68, 1195910), (85, 956728), (136, 597955), (170, 478364), (340, 239182), (680, 119591)]