18972840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{709}}^1$

素因数の和:946

約数の個数: 64

約数和(自身を含む): 57254400

約数和(自身を除く): 38281560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 223, 446, 669, 709, 892, 1115, 1338, 1418, 1784, 2127, 2230, 2676, 2836, 3345, 3545, 4254, 4460, 5352, 5672, 6690, 7090, 8508, 8920, 10635, 13380, 14180, 17016, 21270, 26760, 28360, 42540, 85080, 158107, 316214, 474321, 632428, 790535, 948642, 1264856, 1581070, 1897284, 2371605, 3162140, 3794568, 4743210, 6324280, 9486420, 18972840]

約数ペア:

[(1, 18972840), (2, 9486420), (3, 6324280), (4, 4743210), (5, 3794568), (6, 3162140), (8, 2371605), (10, 1897284), (12, 1581070), (15, 1264856), (20, 948642), (24, 790535), (30, 632428), (40, 474321), (60, 316214), (120, 158107), (223, 85080), (446, 42540), (669, 28360), (709, 26760), (892, 21270), (1115, 17016), (1338, 14180), (1418, 13380), (1784, 10635), (2127, 8920), (2230, 8508), (2676, 7090), (2836, 6690), (3345, 5672), (3545, 5352), (4254, 4460)]