19781454

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{911}}^1$

素因数の和:981

約数の個数: 64

約数和(自身を含む): 50429952

約数和(自身を除く): 30648498

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 47, 66, 77, 94, 141, 154, 231, 282, 329, 462, 517, 658, 911, 987, 1034, 1551, 1822, 1974, 2733, 3102, 3619, 5466, 6377, 7238, 10021, 10857, 12754, 19131, 20042, 21714, 30063, 38262, 42817, 60126, 70147, 85634, 128451, 140294, 210441, 256902, 299719, 420882, 470987, 599438, 899157, 941974, 1412961, 1798314, 2825922, 3296909, 6593818, 9890727, 19781454]

約数ペア:

[(1, 19781454), (2, 9890727), (3, 6593818), (6, 3296909), (7, 2825922), (11, 1798314), (14, 1412961), (21, 941974), (22, 899157), (33, 599438), (42, 470987), (47, 420882), (66, 299719), (77, 256902), (94, 210441), (141, 140294), (154, 128451), (231, 85634), (282, 70147), (329, 60126), (462, 42817), (517, 38262), (658, 30063), (911, 21714), (987, 20042), (1034, 19131), (1551, 12754), (1822, 10857), (1974, 10021), (2733, 7238), (3102, 6377), (3619, 5466)]