161907980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{622723}}^1$

素因数の和:622745

約数の個数: 24

約数和(自身を含む): 366161712

約数和(自身を除く): 204253732

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 622723, 1245446, 2490892, 3113615, 6227230, 8095399, 12454460, 16190798, 32381596, 40476995, 80953990, 161907980]

約数ペア:

[(1, 161907980), (2, 80953990), (4, 40476995), (5, 32381596), (10, 16190798), (13, 12454460), (20, 8095399), (26, 6227230), (52, 3113615), (65, 2490892), (130, 1245446), (260, 622723)]