18975520

素因数分解:

$2^5\times 5^1\times {\mathrm{233}}^1\times {\mathrm{509}}^1$

素因数の和:757

約数の個数: 48

約数和(自身を含む): 45110520

約数和(自身を除く): 26135000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 233, 466, 509, 932, 1018, 1165, 1864, 2036, 2330, 2545, 3728, 4072, 4660, 5090, 7456, 8144, 9320, 10180, 16288, 18640, 20360, 37280, 40720, 81440, 118597, 237194, 474388, 592985, 948776, 1185970, 1897552, 2371940, 3795104, 4743880, 9487760, 18975520]

約数ペア:

[(1, 18975520), (2, 9487760), (4, 4743880), (5, 3795104), (8, 2371940), (10, 1897552), (16, 1185970), (20, 948776), (32, 592985), (40, 474388), (80, 237194), (160, 118597), (233, 81440), (466, 40720), (509, 37280), (932, 20360), (1018, 18640), (1165, 16288), (1864, 10180), (2036, 9320), (2330, 8144), (2545, 7456), (3728, 5090), (4072, 4660)]