25229140

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{163}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 54552960

約数和(自身を除く): 29323820

約数列:

[1, 2, 4, 5, 10, 20, 71, 109, 142, 163, 218, 284, 326, 355, 436, 545, 652, 710, 815, 1090, 1420, 1630, 2180, 3260, 7739, 11573, 15478, 17767, 23146, 30956, 35534, 38695, 46292, 57865, 71068, 77390, 88835, 115730, 154780, 177670, 231460, 355340, 1261457, 2522914, 5045828, 6307285, 12614570, 25229140]

約数ペア:

[(1, 25229140), (2, 12614570), (4, 6307285), (5, 5045828), (10, 2522914), (20, 1261457), (71, 355340), (109, 231460), (142, 177670), (163, 154780), (218, 115730), (284, 88835), (326, 77390), (355, 71068), (436, 57865), (545, 46292), (652, 38695), (710, 35534), (815, 30956), (1090, 23146), (1420, 17767), (1630, 15478), (2180, 11573), (3260, 7739)]