18878240

素因数分解:

$2^5\times 5^1\times {\mathrm{117989}}^1$

素因数の和:118004

約数の個数: 24

約数和(自身を含む): 44600220

約数和(自身を除く): 25721980

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 117989, 235978, 471956, 589945, 943912, 1179890, 1887824, 2359780, 3775648, 4719560, 9439120, 18878240]

約数ペア:

[(1, 18878240), (2, 9439120), (4, 4719560), (5, 3775648), (8, 2359780), (10, 1887824), (16, 1179890), (20, 943912), (32, 589945), (40, 471956), (80, 235978), (160, 117989)]