28106780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{6359}}^1$

素因数の和:6398

約数の個数: 48

約数和(自身を含む): 67314240

約数和(自身を除く): 39207460

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 6359, 12718, 25436, 31795, 63590, 82667, 108103, 127180, 165334, 216206, 330668, 413335, 432412, 540515, 826670, 1081030, 1405339, 1653340, 2162060, 2810678, 5621356, 7026695, 14053390, 28106780]

約数ペア:

[(1, 28106780), (2, 14053390), (4, 7026695), (5, 5621356), (10, 2810678), (13, 2162060), (17, 1653340), (20, 1405339), (26, 1081030), (34, 826670), (52, 540515), (65, 432412), (68, 413335), (85, 330668), (130, 216206), (170, 165334), (221, 127180), (260, 108103), (340, 82667), (442, 63590), (884, 31795), (1105, 25436), (2210, 12718), (4420, 6359)]