18719350

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{929}}^1$

素因数の和:985

約数の個数: 48

約数和(自身を含む): 38747520

約数和(自身を除く): 20028170

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 310, 325, 403, 650, 775, 806, 929, 1550, 1858, 2015, 4030, 4645, 9290, 10075, 12077, 20150, 23225, 24154, 28799, 46450, 57598, 60385, 120770, 143995, 287990, 301925, 374387, 603850, 719975, 748774, 1439950, 1871935, 3743870, 9359675, 18719350]

約数ペア:

[(1, 18719350), (2, 9359675), (5, 3743870), (10, 1871935), (13, 1439950), (25, 748774), (26, 719975), (31, 603850), (50, 374387), (62, 301925), (65, 287990), (130, 143995), (155, 120770), (310, 60385), (325, 57598), (403, 46450), (650, 28799), (775, 24154), (806, 23225), (929, 20150), (1550, 12077), (1858, 10075), (2015, 9290), (4030, 4645)]