71247640

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{2753}}^1$

素因数の和:3411

約数の個数: 32

約数和(自身を含む): 160613280

約数和(自身を除く): 89365640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 1294, 2588, 2753, 3235, 5176, 5506, 6470, 11012, 12940, 13765, 22024, 25880, 27530, 55060, 110120, 1781191, 3562382, 7124764, 8905955, 14249528, 17811910, 35623820, 71247640]

約数ペア:

[(1, 71247640), (2, 35623820), (4, 17811910), (5, 14249528), (8, 8905955), (10, 7124764), (20, 3562382), (40, 1781191), (647, 110120), (1294, 55060), (2588, 27530), (2753, 25880), (3235, 22024), (5176, 13765), (5506, 12940), (6470, 11012)]