15561980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{3833}}^1$

素因数の和:3878

約数の個数: 48

約数和(自身を含む): 38646720

約数和(自身を除く): 23084740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 3833, 4060, 7666, 15332, 19165, 26831, 38330, 53662, 76660, 107324, 111157, 134155, 222314, 268310, 444628, 536620, 555785, 778099, 1111570, 1556198, 2223140, 3112396, 3890495, 7780990, 15561980]

約数ペア:

[(1, 15561980), (2, 7780990), (4, 3890495), (5, 3112396), (7, 2223140), (10, 1556198), (14, 1111570), (20, 778099), (28, 555785), (29, 536620), (35, 444628), (58, 268310), (70, 222314), (116, 134155), (140, 111157), (145, 107324), (203, 76660), (290, 53662), (406, 38330), (580, 26831), (812, 19165), (1015, 15332), (2030, 7666), (3833, 4060)]