31520620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{761}}^1$

素因数の和:898

約数の個数: 48

約数和(自身を含む): 70408800

約数和(自身を除く): 38888180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 109, 190, 218, 380, 436, 545, 761, 1090, 1522, 2071, 2180, 3044, 3805, 4142, 7610, 8284, 10355, 14459, 15220, 20710, 28918, 41420, 57836, 72295, 82949, 144590, 165898, 289180, 331796, 414745, 829490, 1576031, 1658980, 3152062, 6304124, 7880155, 15760310, 31520620]

約数ペア:

[(1, 31520620), (2, 15760310), (4, 7880155), (5, 6304124), (10, 3152062), (19, 1658980), (20, 1576031), (38, 829490), (76, 414745), (95, 331796), (109, 289180), (190, 165898), (218, 144590), (380, 82949), (436, 72295), (545, 57836), (761, 41420), (1090, 28918), (1522, 20710), (2071, 15220), (2180, 14459), (3044, 10355), (3805, 8284), (4142, 7610)]