20740760

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{7103}}^1$

素因数の和:7187

約数の個数: 32

約数和(自身を含む): 47312640

約数和(自身を除く): 26571880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 7103, 14206, 28412, 35515, 56824, 71030, 142060, 284120, 518519, 1037038, 2074076, 2592595, 4148152, 5185190, 10370380, 20740760]

約数ペア:

[(1, 20740760), (2, 10370380), (4, 5185190), (5, 4148152), (8, 2592595), (10, 2074076), (20, 1037038), (40, 518519), (73, 284120), (146, 142060), (292, 71030), (365, 56824), (584, 35515), (730, 28412), (1460, 14206), (2920, 7103)]