28117915

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:236

約数の個数: 48

約数和(自身を含む): 42796512

約数和(自身を除く): 14678597

約数列:

[1, 5, 7, 17, 35, 43, 49, 85, 119, 157, 215, 245, 301, 595, 731, 785, 833, 1099, 1505, 2107, 2669, 3655, 4165, 5117, 5495, 6751, 7693, 10535, 13345, 18683, 25585, 33755, 35819, 38465, 47257, 93415, 114767, 130781, 179095, 236285, 330799, 573835, 653905, 803369, 1653995, 4016845, 5623583, 28117915]

約数ペア:

[(1, 28117915), (5, 5623583), (7, 4016845), (17, 1653995), (35, 803369), (43, 653905), (49, 573835), (85, 330799), (119, 236285), (157, 179095), (215, 130781), (245, 114767), (301, 93415), (595, 47257), (731, 38465), (785, 35819), (833, 33755), (1099, 25585), (1505, 18683), (2107, 13345), (2669, 10535), (3655, 7693), (4165, 6751), (5117, 5495)]