21020697

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{1277}}^1$

素因数の和:1373

約数の個数: 24

約数和(自身を含む): 31898880

約数和(自身を除く): 10878183

約数列:

[1, 3, 9, 31, 59, 93, 177, 279, 531, 1277, 1829, 3831, 5487, 11493, 16461, 39587, 75343, 118761, 226029, 356283, 678087, 2335633, 7006899, 21020697]

約数ペア:

[(1, 21020697), (3, 7006899), (9, 2335633), (31, 678087), (59, 356283), (93, 226029), (177, 118761), (279, 75343), (531, 39587), (1277, 16461), (1829, 11493), (3831, 5487)]