216545740

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{2089}}^1$

素因数の和:2242

約数の個数: 48

約数和(自身を含む): 467691840

約数和(自身を除く): 251146100

約数列:

[1, 2, 4, 5, 10, 20, 71, 73, 142, 146, 284, 292, 355, 365, 710, 730, 1420, 1460, 2089, 4178, 5183, 8356, 10366, 10445, 20732, 20890, 25915, 41780, 51830, 103660, 148319, 152497, 296638, 304994, 593276, 609988, 741595, 762485, 1483190, 1524970, 2966380, 3049940, 10827287, 21654574, 43309148, 54136435, 108272870, 216545740]

約数ペア:

[(1, 216545740), (2, 108272870), (4, 54136435), (5, 43309148), (10, 21654574), (20, 10827287), (71, 3049940), (73, 2966380), (142, 1524970), (146, 1483190), (284, 762485), (292, 741595), (355, 609988), (365, 593276), (710, 304994), (730, 296638), (1420, 152497), (1460, 148319), (2089, 103660), (4178, 51830), (5183, 41780), (8356, 25915), (10366, 20890), (10445, 20732)]