31400080

素因数分解:

$2^4\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1009}}^1$

素因数の和:1411

約数の個数: 40

約数和(自身を含む): 73265400

約数和(自身を除く): 41865320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 389, 778, 1009, 1556, 1945, 2018, 3112, 3890, 4036, 5045, 6224, 7780, 8072, 10090, 15560, 16144, 20180, 31120, 40360, 80720, 392501, 785002, 1570004, 1962505, 3140008, 3925010, 6280016, 7850020, 15700040, 31400080]

約数ペア:

[(1, 31400080), (2, 15700040), (4, 7850020), (5, 6280016), (8, 3925010), (10, 3140008), (16, 1962505), (20, 1570004), (40, 785002), (80, 392501), (389, 80720), (778, 40360), (1009, 31120), (1556, 20180), (1945, 16144), (2018, 15560), (3112, 10090), (3890, 8072), (4036, 7780), (5045, 6224)]