20844954

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{389}}^1$

素因数の和:639

約数の個数: 48

約数和(自身を含む): 48976200

約数和(自身を除く): 28131246

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 229, 234, 389, 458, 687, 778, 1167, 1374, 2061, 2334, 2977, 3501, 4122, 5057, 5954, 7002, 8931, 10114, 15171, 17862, 26793, 30342, 45513, 53586, 89081, 91026, 178162, 267243, 534486, 801729, 1158053, 1603458, 2316106, 3474159, 6948318, 10422477, 20844954]

約数ペア:

[(1, 20844954), (2, 10422477), (3, 6948318), (6, 3474159), (9, 2316106), (13, 1603458), (18, 1158053), (26, 801729), (39, 534486), (78, 267243), (117, 178162), (229, 91026), (234, 89081), (389, 53586), (458, 45513), (687, 30342), (778, 26793), (1167, 17862), (1374, 15171), (2061, 10114), (2334, 8931), (2977, 7002), (3501, 5954), (4122, 5057)]