20851506

素因数分解:

$2^1\times 3^4\times {\mathrm{13}}^1\times {\mathrm{9901}}^1$

素因数の和:9928

約数の個数: 40

約数和(自身を含む): 50321964

約数和(自身を除く): 29470458

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 81, 117, 162, 234, 351, 702, 1053, 2106, 9901, 19802, 29703, 59406, 89109, 128713, 178218, 257426, 267327, 386139, 534654, 772278, 801981, 1158417, 1603962, 2316834, 3475251, 6950502, 10425753, 20851506]

約数ペア:

[(1, 20851506), (2, 10425753), (3, 6950502), (6, 3475251), (9, 2316834), (13, 1603962), (18, 1158417), (26, 801981), (27, 772278), (39, 534654), (54, 386139), (78, 267327), (81, 257426), (117, 178218), (162, 128713), (234, 89109), (351, 59406), (702, 29703), (1053, 19802), (2106, 9901)]