21917220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{28099}}^1$

素因数の和:28124

約数の個数: 48

約数和(自身を含む): 66091200

約数和(自身を除く): 44173980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 28099, 56198, 84297, 112396, 140495, 168594, 280990, 337188, 365287, 421485, 561980, 730574, 842970, 1095861, 1461148, 1685940, 1826435, 2191722, 3652870, 4383444, 5479305, 7305740, 10958610, 21917220]

約数ペア:

[(1, 21917220), (2, 10958610), (3, 7305740), (4, 5479305), (5, 4383444), (6, 3652870), (10, 2191722), (12, 1826435), (13, 1685940), (15, 1461148), (20, 1095861), (26, 842970), (30, 730574), (39, 561980), (52, 421485), (60, 365287), (65, 337188), (78, 280990), (130, 168594), (156, 140495), (195, 112396), (260, 84297), (390, 56198), (780, 28099)]