9978040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{691}}^1$

素因数の和:740

約数の個数: 48

約数和(自身を含む): 23728680

約数和(自身を除く): 13750640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 361, 380, 691, 722, 760, 1382, 1444, 1805, 2764, 2888, 3455, 3610, 5528, 6910, 7220, 13129, 13820, 14440, 26258, 27640, 52516, 65645, 105032, 131290, 249451, 262580, 498902, 525160, 997804, 1247255, 1995608, 2494510, 4989020, 9978040]

約数ペア:

[(1, 9978040), (2, 4989020), (4, 2494510), (5, 1995608), (8, 1247255), (10, 997804), (19, 525160), (20, 498902), (38, 262580), (40, 249451), (76, 131290), (95, 105032), (152, 65645), (190, 52516), (361, 27640), (380, 26258), (691, 14440), (722, 13820), (760, 13129), (1382, 7220), (1444, 6910), (1805, 5528), (2764, 3610), (2888, 3455)]