20475720

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{18959}}^1$

素因数の和:18979

約数の個数: 64

約数和(自身を含む): 68256000

約数和(自身を除く): 47780280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 180, 216, 270, 360, 540, 1080, 18959, 37918, 56877, 75836, 94795, 113754, 151672, 170631, 189590, 227508, 284385, 341262, 379180, 455016, 511893, 568770, 682524, 758360, 853155, 1023786, 1137540, 1365048, 1706310, 2047572, 2275080, 2559465, 3412620, 4095144, 5118930, 6825240, 10237860, 20475720]

約数ペア:

[(1, 20475720), (2, 10237860), (3, 6825240), (4, 5118930), (5, 4095144), (6, 3412620), (8, 2559465), (9, 2275080), (10, 2047572), (12, 1706310), (15, 1365048), (18, 1137540), (20, 1023786), (24, 853155), (27, 758360), (30, 682524), (36, 568770), (40, 511893), (45, 455016), (54, 379180), (60, 341262), (72, 284385), (90, 227508), (108, 189590), (120, 170631), (135, 151672), (180, 113754), (216, 94795), (270, 75836), (360, 56877), (540, 37918), (1080, 18959)]