20478120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13127}}^1$

素因数の和:13154

約数の個数: 64

約数和(自身を含む): 66165120

約数和(自身を除く): 45687000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13127, 26254, 39381, 52508, 65635, 78762, 105016, 131270, 157524, 170651, 196905, 262540, 315048, 341302, 393810, 511953, 525080, 682604, 787620, 853255, 1023906, 1365208, 1575240, 1706510, 2047812, 2559765, 3413020, 4095624, 5119530, 6826040, 10239060, 20478120]

約数ペア:

[(1, 20478120), (2, 10239060), (3, 6826040), (4, 5119530), (5, 4095624), (6, 3413020), (8, 2559765), (10, 2047812), (12, 1706510), (13, 1575240), (15, 1365208), (20, 1023906), (24, 853255), (26, 787620), (30, 682604), (39, 525080), (40, 511953), (52, 393810), (60, 341302), (65, 315048), (78, 262540), (104, 196905), (120, 170651), (130, 157524), (156, 131270), (195, 105016), (260, 78762), (312, 65635), (390, 52508), (520, 39381), (780, 26254), (1560, 13127)]