21996452

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{15233}}^1$

素因数の和:15275

約数の個数: 18

約数和(自身を含む): 40629078

約数和(自身を除く): 18632626

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 15233, 30466, 60932, 289427, 578854, 1157708, 5499113, 10998226, 21996452]

約数ペア:

[(1, 21996452), (2, 10998226), (4, 5499113), (19, 1157708), (38, 578854), (76, 289427), (361, 60932), (722, 30466), (1444, 15233)]