21124904

素因数分解:

$2^3\times {\mathrm{659}}^1\times {\mathrm{4007}}^1$

素因数の和:4672

約数の個数: 16

約数和(自身を含む): 39679200

約数和(自身を除く): 18554296

約数列:

[1, 2, 4, 8, 659, 1318, 2636, 4007, 5272, 8014, 16028, 32056, 2640613, 5281226, 10562452, 21124904]

約数ペア:

[(1, 21124904), (2, 10562452), (4, 5281226), (8, 2640613), (659, 32056), (1318, 16028), (2636, 8014), (4007, 5272)]