81413860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{19477}}^1$

素因数の和:19516

約数の個数: 48

約数和(自身を含む): 196338240

約数和(自身を除く): 114924380

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, 19477, 38954, 77908, 97385, 194770, 214247, 370063, 389540, 428494, 740126, 856988, 1071235, 1480252, 1850315, 2142470, 3700630, 4070693, 4284940, 7401260, 8141386, 16282772, 20353465, 40706930, 81413860]

約数ペア:

[(1, 81413860), (2, 40706930), (4, 20353465), (5, 16282772), (10, 8141386), (11, 7401260), (19, 4284940), (20, 4070693), (22, 3700630), (38, 2142470), (44, 1850315), (55, 1480252), (76, 1071235), (95, 856988), (110, 740126), (190, 428494), (209, 389540), (220, 370063), (380, 214247), (418, 194770), (836, 97385), (1045, 77908), (2090, 38954), (4180, 19477)]