221357978

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{613}}^1\times {\mathrm{2543}}^1$

素因数の和:3229

約数の個数: 16

約数和(自身を含む): 337395456

約数和(自身を除く): 116037478

約数列:

[1, 2, 71, 142, 613, 1226, 2543, 5086, 43523, 87046, 180553, 361106, 1558859, 3117718, 110678989, 221357978]

約数ペア:

[(1, 221357978), (2, 110678989), (71, 3117718), (142, 1558859), (613, 361106), (1226, 180553), (2543, 87046), (5086, 43523)]