31878275

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{241}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 47892768

約数和(自身を除く): 16014493

約数列:

[1, 5, 11, 13, 25, 37, 55, 65, 143, 185, 241, 275, 325, 407, 481, 715, 925, 1205, 2035, 2405, 2651, 3133, 3575, 5291, 6025, 8917, 10175, 12025, 13255, 15665, 26455, 34463, 44585, 66275, 78325, 98087, 115921, 132275, 172315, 222925, 490435, 579605, 861575, 1275131, 2452175, 2898025, 6375655, 31878275]

約数ペア:

[(1, 31878275), (5, 6375655), (11, 2898025), (13, 2452175), (25, 1275131), (37, 861575), (55, 579605), (65, 490435), (143, 222925), (185, 172315), (241, 132275), (275, 115921), (325, 98087), (407, 78325), (481, 66275), (715, 44585), (925, 34463), (1205, 26455), (2035, 15665), (2405, 13255), (2651, 12025), (3133, 10175), (3575, 8917), (5291, 6025)]