128968940

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{137201}}^1$

素因数の和:137257

約数の個数: 24

約数和(自身を含む): 276599232

約数和(自身を除く): 147630292

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 137201, 274402, 548804, 686005, 1372010, 2744020, 6448447, 12896894, 25793788, 32242235, 64484470, 128968940]

約数ペア:

[(1, 128968940), (2, 64484470), (4, 32242235), (5, 25793788), (10, 12896894), (20, 6448447), (47, 2744020), (94, 1372010), (188, 686005), (235, 548804), (470, 274402), (940, 137201)]