21126618

素因数分解:

$2^1\times 3^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{271}}^1$

素因数の和:411

約数の個数: 48

約数和(自身を含む): 47354112

約数和(自身を除く): 26227494

約数列:

[1, 2, 3, 6, 9, 18, 61, 71, 122, 142, 183, 213, 271, 366, 426, 542, 549, 639, 813, 1098, 1278, 1626, 2439, 4331, 4878, 8662, 12993, 16531, 19241, 25986, 33062, 38482, 38979, 49593, 57723, 77958, 99186, 115446, 148779, 173169, 297558, 346338, 1173701, 2347402, 3521103, 7042206, 10563309, 21126618]

約数ペア:

[(1, 21126618), (2, 10563309), (3, 7042206), (6, 3521103), (9, 2347402), (18, 1173701), (61, 346338), (71, 297558), (122, 173169), (142, 148779), (183, 115446), (213, 99186), (271, 77958), (366, 57723), (426, 49593), (542, 38979), (549, 38482), (639, 33062), (813, 25986), (1098, 19241), (1278, 16531), (1626, 12993), (2439, 8662), (4331, 4878)]