18724251

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{641}}^1$

素因数の和:771

約数の個数: 32

約数和(自身を含む): 31062528

約数和(自身を除く): 12338277

約数列:

[1, 3, 7, 13, 21, 39, 91, 107, 273, 321, 641, 749, 1391, 1923, 2247, 4173, 4487, 8333, 9737, 13461, 24999, 29211, 58331, 68587, 174993, 205761, 480109, 891631, 1440327, 2674893, 6241417, 18724251]

約数ペア:

[(1, 18724251), (3, 6241417), (7, 2674893), (13, 1440327), (21, 891631), (39, 480109), (91, 205761), (107, 174993), (273, 68587), (321, 58331), (641, 29211), (749, 24999), (1391, 13461), (1923, 9737), (2247, 8333), (4173, 4487)]