21730020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2143}}^1$

素因数の和:2181

約数の個数: 72

約数和(自身を含む): 65915136

約数和(自身を除く): 44185116

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 169, 195, 260, 338, 390, 507, 676, 780, 845, 1014, 1690, 2028, 2143, 2535, 3380, 4286, 5070, 6429, 8572, 10140, 10715, 12858, 21430, 25716, 27859, 32145, 42860, 55718, 64290, 83577, 111436, 128580, 139295, 167154, 278590, 334308, 362167, 417885, 557180, 724334, 835770, 1086501, 1448668, 1671540, 1810835, 2173002, 3621670, 4346004, 5432505, 7243340, 10865010, 21730020]

約数ペア:

[(1, 21730020), (2, 10865010), (3, 7243340), (4, 5432505), (5, 4346004), (6, 3621670), (10, 2173002), (12, 1810835), (13, 1671540), (15, 1448668), (20, 1086501), (26, 835770), (30, 724334), (39, 557180), (52, 417885), (60, 362167), (65, 334308), (78, 278590), (130, 167154), (156, 139295), (169, 128580), (195, 111436), (260, 83577), (338, 64290), (390, 55718), (507, 42860), (676, 32145), (780, 27859), (845, 25716), (1014, 21430), (1690, 12858), (2028, 10715), (2143, 10140), (2535, 8572), (3380, 6429), (4286, 5070)]