20687028

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{4409}}^1$

素因数の和:4456

約数の個数: 48

約数和(自身を含む): 53343360

約数和(自身を除く): 32656332

約数列:

[1, 2, 3, 4, 6, 12, 17, 23, 34, 46, 51, 68, 69, 92, 102, 138, 204, 276, 391, 782, 1173, 1564, 2346, 4409, 4692, 8818, 13227, 17636, 26454, 52908, 74953, 101407, 149906, 202814, 224859, 299812, 304221, 405628, 449718, 608442, 899436, 1216884, 1723919, 3447838, 5171757, 6895676, 10343514, 20687028]

約数ペア:

[(1, 20687028), (2, 10343514), (3, 6895676), (4, 5171757), (6, 3447838), (12, 1723919), (17, 1216884), (23, 899436), (34, 608442), (46, 449718), (51, 405628), (68, 304221), (69, 299812), (92, 224859), (102, 202814), (138, 149906), (204, 101407), (276, 74953), (391, 52908), (782, 26454), (1173, 17636), (1564, 13227), (2346, 8818), (4409, 4692)]