20918219875

素因数分解:

$5^3\times 7^1\times {\mathrm{5653}}^1\times {\mathrm{4229}}^1$

素因数の和:9904

約数の個数: 32

約数和(自身を含む): 29847692160

約数和(自身を除く): 8929472285

約数列:

[1, 5, 7, 25, 35, 125, 175, 875, 4229, 5653, 21145, 28265, 29603, 39571, 105725, 141325, 148015, 197855, 528625, 706625, 740075, 989275, 3700375, 4946375, 23906537, 119532685, 167345759, 597663425, 836728795, 2988317125, 4183643975, 20918219875]

約数ペア:

[(1, 20918219875), (5, 4183643975), (7, 2988317125), (25, 836728795), (35, 597663425), (125, 167345759), (175, 119532685), (875, 23906537), (4229, 4946375), (5653, 3700375), (21145, 989275), (28265, 740075), (29603, 706625), (39571, 528625), (105725, 197855), (141325, 148015)]