20402975

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{787}}^1$

素因数の和:875

約数の個数: 24

約数和(自身を含む): 27261648

約数和(自身を除く): 6858673

約数列:

[1, 5, 17, 25, 61, 85, 305, 425, 787, 1037, 1525, 3935, 5185, 13379, 19675, 25925, 48007, 66895, 240035, 334475, 816119, 1200175, 4080595, 20402975]

約数ペア:

[(1, 20402975), (5, 4080595), (17, 1200175), (25, 816119), (61, 334475), (85, 240035), (305, 66895), (425, 48007), (787, 25925), (1037, 19675), (1525, 13379), (3935, 5185)]