20972988

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{18793}}^1$

素因数の和:18834

約数の個数: 36

約数和(自身を含む): 54728128

約数和(自身を除く): 33755140

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 62, 93, 124, 186, 279, 372, 558, 1116, 18793, 37586, 56379, 75172, 112758, 169137, 225516, 338274, 582583, 676548, 1165166, 1747749, 2330332, 3495498, 5243247, 6990996, 10486494, 20972988]

約数ペア:

[(1, 20972988), (2, 10486494), (3, 6990996), (4, 5243247), (6, 3495498), (9, 2330332), (12, 1747749), (18, 1165166), (31, 676548), (36, 582583), (62, 338274), (93, 225516), (124, 169137), (186, 112758), (279, 75172), (372, 56379), (558, 37586), (1116, 18793)]