19902454

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:193

約数の個数: 48

約数和(自身を含む): 36286704

約数和(自身を除く): 16384250

約数列:

[1, 2, 11, 13, 22, 26, 53, 101, 106, 143, 169, 202, 286, 338, 583, 689, 1111, 1166, 1313, 1378, 1859, 2222, 2626, 3718, 5353, 7579, 8957, 10706, 14443, 15158, 17069, 17914, 28886, 34138, 58883, 69589, 98527, 117766, 139178, 187759, 197054, 375518, 765479, 904657, 1530958, 1809314, 9951227, 19902454]

約数ペア:

[(1, 19902454), (2, 9951227), (11, 1809314), (13, 1530958), (22, 904657), (26, 765479), (53, 375518), (101, 197054), (106, 187759), (143, 139178), (169, 117766), (202, 98527), (286, 69589), (338, 58883), (583, 34138), (689, 28886), (1111, 17914), (1166, 17069), (1313, 15158), (1378, 14443), (1859, 10706), (2222, 8957), (2626, 7579), (3718, 5353)]