20872860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{331}}^1\times {\mathrm{1051}}^1$

素因数の和:1394

約数の個数: 48

約数和(自身を含む): 58676352

約数和(自身を除く): 37803492

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 331, 662, 993, 1051, 1324, 1655, 1986, 2102, 3153, 3310, 3972, 4204, 4965, 5255, 6306, 6620, 9930, 10510, 12612, 15765, 19860, 21020, 31530, 63060, 347881, 695762, 1043643, 1391524, 1739405, 2087286, 3478810, 4174572, 5218215, 6957620, 10436430, 20872860]

約数ペア:

[(1, 20872860), (2, 10436430), (3, 6957620), (4, 5218215), (5, 4174572), (6, 3478810), (10, 2087286), (12, 1739405), (15, 1391524), (20, 1043643), (30, 695762), (60, 347881), (331, 63060), (662, 31530), (993, 21020), (1051, 19860), (1324, 15765), (1655, 12612), (1986, 10510), (2102, 9930), (3153, 6620), (3310, 6306), (3972, 5255), (4204, 4965)]