20783320

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{6577}}^1$

素因数の和:6667

約数の個数: 32

約数和(自身を含む): 47361600

約数和(自身を除く): 26578280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 6577, 13154, 26308, 32885, 52616, 65770, 131540, 263080, 519583, 1039166, 2078332, 2597915, 4156664, 5195830, 10391660, 20783320]

約数ペア:

[(1, 20783320), (2, 10391660), (4, 5195830), (5, 4156664), (8, 2597915), (10, 2078332), (20, 1039166), (40, 519583), (79, 263080), (158, 131540), (316, 65770), (395, 52616), (632, 32885), (790, 26308), (1580, 13154), (3160, 6577)]