20686953

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{373}}^1$

素因数の和:541

約数の個数: 32

約数和(自身を含む): 33510400

約数和(自身を除く): 12823447

約数列:

[1, 3, 7, 19, 21, 57, 133, 139, 373, 399, 417, 973, 1119, 2611, 2641, 2919, 7087, 7833, 7923, 18487, 21261, 49609, 51847, 55461, 148827, 155541, 362929, 985093, 1088787, 2955279, 6895651, 20686953]

約数ペア:

[(1, 20686953), (3, 6895651), (7, 2955279), (19, 1088787), (21, 985093), (57, 362929), (133, 155541), (139, 148827), (373, 55461), (399, 51847), (417, 49609), (973, 21261), (1119, 18487), (2611, 7923), (2641, 7833), (2919, 7087)]