19933960

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{7019}}^1$

素因数の和:7101

約数の個数: 32

約数和(自身を含む): 45489600

約数和(自身を除く): 25555640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 7019, 14038, 28076, 35095, 56152, 70190, 140380, 280760, 498349, 996698, 1993396, 2491745, 3986792, 4983490, 9966980, 19933960]

約数ペア:

[(1, 19933960), (2, 9966980), (4, 4983490), (5, 3986792), (8, 2491745), (10, 1993396), (20, 996698), (40, 498349), (71, 280760), (142, 140380), (284, 70190), (355, 56152), (568, 35095), (710, 28076), (1420, 14038), (2840, 7019)]