20554040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^2\times {\mathrm{47}}^1$

素因数の和:129

約数の個数: 96

約数和(自身を含む): 52678080

約数和(自身を除く): 32124040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 29, 40, 47, 52, 58, 65, 94, 104, 116, 130, 145, 188, 232, 235, 260, 290, 376, 377, 470, 520, 580, 611, 754, 841, 940, 1160, 1222, 1363, 1508, 1682, 1880, 1885, 2444, 2726, 3016, 3055, 3364, 3770, 4205, 4888, 5452, 6110, 6728, 6815, 7540, 8410, 10904, 10933, 12220, 13630, 15080, 16820, 17719, 21866, 24440, 27260, 33640, 35438, 39527, 43732, 54520, 54665, 70876, 79054, 87464, 88595, 109330, 141752, 158108, 177190, 197635, 218660, 316216, 354380, 395270, 437320, 513851, 708760, 790540, 1027702, 1581080, 2055404, 2569255, 4110808, 5138510, 10277020, 20554040]

約数ペア:

[(1, 20554040), (2, 10277020), (4, 5138510), (5, 4110808), (8, 2569255), (10, 2055404), (13, 1581080), (20, 1027702), (26, 790540), (29, 708760), (40, 513851), (47, 437320), (52, 395270), (58, 354380), (65, 316216), (94, 218660), (104, 197635), (116, 177190), (130, 158108), (145, 141752), (188, 109330), (232, 88595), (235, 87464), (260, 79054), (290, 70876), (376, 54665), (377, 54520), (470, 43732), (520, 39527), (580, 35438), (611, 33640), (754, 27260), (841, 24440), (940, 21866), (1160, 17719), (1222, 16820), (1363, 15080), (1508, 13630), (1682, 12220), (1880, 10933), (1885, 10904), (2444, 8410), (2726, 7540), (3016, 6815), (3055, 6728), (3364, 6110), (3770, 5452), (4205, 4888)]