21129596

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{6781}}^1$

素因数の和:6845

約数の個数: 24

約数和(自身を含む): 39878160

約数和(自身を除く): 18748564

約数列:

[1, 2, 4, 19, 38, 41, 76, 82, 164, 779, 1558, 3116, 6781, 13562, 27124, 128839, 257678, 278021, 515356, 556042, 1112084, 5282399, 10564798, 21129596]

約数ペア:

[(1, 21129596), (2, 10564798), (4, 5282399), (19, 1112084), (38, 556042), (41, 515356), (76, 278021), (82, 257678), (164, 128839), (779, 27124), (1558, 13562), (3116, 6781)]