19972725

素因数分解:

$3^1\times 5^2\times {\mathrm{283}}^1\times {\mathrm{941}}^1$

素因数の和:1237

約数の個数: 24

約数和(自身を含む): 33173472

約数和(自身を除く): 13200747

約数列:

[1, 3, 5, 15, 25, 75, 283, 849, 941, 1415, 2823, 4245, 4705, 7075, 14115, 21225, 23525, 70575, 266303, 798909, 1331515, 3994545, 6657575, 19972725]

約数ペア:

[(1, 19972725), (3, 6657575), (5, 3994545), (15, 1331515), (25, 798909), (75, 266303), (283, 70575), (849, 23525), (941, 21225), (1415, 14115), (2823, 7075), (4245, 4705)]