19981215

素因数分解:

$3^3\times 5^1\times {\mathrm{283}}^1\times {\mathrm{523}}^1$

素因数の和:820

約数の個数: 32

約数和(自身を含む): 35715840

約数和(自身を除く): 15734625

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 283, 523, 849, 1415, 1569, 2547, 2615, 4245, 4707, 7641, 7845, 12735, 14121, 23535, 38205, 70605, 148009, 444027, 740045, 1332081, 2220135, 3996243, 6660405, 19981215]

約数ペア:

[(1, 19981215), (3, 6660405), (5, 3996243), (9, 2220135), (15, 1332081), (27, 740045), (45, 444027), (135, 148009), (283, 70605), (523, 38205), (849, 23535), (1415, 14121), (1569, 12735), (2547, 7845), (2615, 7641), (4245, 4707)]