20666450

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{431}}^1$

素因数の和:587

約数の個数: 48

約数和(自身を含む): 44354304

約数和(自身を除く): 23687854

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 137, 175, 274, 350, 431, 685, 862, 959, 1370, 1918, 2155, 3017, 3425, 4310, 4795, 6034, 6850, 9590, 10775, 15085, 21550, 23975, 30170, 47950, 59047, 75425, 118094, 150850, 295235, 413329, 590470, 826658, 1476175, 2066645, 2952350, 4133290, 10333225, 20666450]

約数ペア:

[(1, 20666450), (2, 10333225), (5, 4133290), (7, 2952350), (10, 2066645), (14, 1476175), (25, 826658), (35, 590470), (50, 413329), (70, 295235), (137, 150850), (175, 118094), (274, 75425), (350, 59047), (431, 47950), (685, 30170), (862, 23975), (959, 21550), (1370, 15085), (1918, 10775), (2155, 9590), (3017, 6850), (3425, 6034), (4310, 4795)]