21209820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{4259}}^1$

素因数の和:4354

約数の個数: 48

約数和(自身を含む): 60117120

約数和(自身を除く): 38907300

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 83, 166, 249, 332, 415, 498, 830, 996, 1245, 1660, 2490, 4259, 4980, 8518, 12777, 17036, 21295, 25554, 42590, 51108, 63885, 85180, 127770, 255540, 353497, 706994, 1060491, 1413988, 1767485, 2120982, 3534970, 4241964, 5302455, 7069940, 10604910, 21209820]

約数ペア:

[(1, 21209820), (2, 10604910), (3, 7069940), (4, 5302455), (5, 4241964), (6, 3534970), (10, 2120982), (12, 1767485), (15, 1413988), (20, 1060491), (30, 706994), (60, 353497), (83, 255540), (166, 127770), (249, 85180), (332, 63885), (415, 51108), (498, 42590), (830, 25554), (996, 21295), (1245, 17036), (1660, 12777), (2490, 8518), (4259, 4980)]