87909580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{21031}}^1$

素因数の和:21070

約数の個数: 48

約数和(自身を含む): 212002560

約数和(自身を除く): 124092980

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 21031, 42062, 84124, 105155, 210310, 231341, 399589, 420620, 462682, 799178, 925364, 1156705, 1598356, 1997945, 2313410, 3995890, 4395479, 4626820, 7991780, 8790958, 17581916, 21977395, 43954790, 87909580]

約数ペア:

[(1, 87909580), (2, 43954790), (4, 21977395), (5, 17581916), (10, 8790958), (11, 7991780), (19, 4626820), (20, 4395479), (22, 3995890), (38, 2313410), (44, 1997945), (55, 1598356), (76, 1156705), (95, 925364), (110, 799178), (190, 462682), (209, 420620), (220, 399589), (380, 231341), (418, 210310), (836, 105155), (1045, 84124), (2090, 42062), (4180, 21031)]