20691285

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{919}}^1$

素因数の和:1025

約数の個数: 32

約数和(自身を含む): 35328000

約数和(自身を除く): 14636715

約数列:

[1, 3, 5, 15, 19, 57, 79, 95, 237, 285, 395, 919, 1185, 1501, 2757, 4503, 4595, 7505, 13785, 17461, 22515, 52383, 72601, 87305, 217803, 261915, 363005, 1089015, 1379419, 4138257, 6897095, 20691285]

約数ペア:

[(1, 20691285), (3, 6897095), (5, 4138257), (15, 1379419), (19, 1089015), (57, 363005), (79, 261915), (95, 217803), (237, 87305), (285, 72601), (395, 52383), (919, 22515), (1185, 17461), (1501, 13785), (2757, 7505), (4503, 4595)]