21021303506

素因数分解:

$2^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{431}}^1\times {\mathrm{13451}}^1$

素因数の和:13935

約数の個数: 48

約数和(自身を含む): 37761593472

約数和(自身を除く): 16740289966

約数列:

[1, 2, 7, 14, 37, 49, 74, 98, 259, 431, 518, 862, 1813, 3017, 3626, 6034, 13451, 15947, 21119, 26902, 31894, 42238, 94157, 111629, 188314, 223258, 497687, 659099, 781403, 995374, 1318198, 1562806, 3483809, 5797381, 6967618, 11594762, 24386663, 40581667, 48773326, 81163334, 214503097, 284071669, 429006194, 568143338, 1501521679, 3003043358, 10510651753, 21021303506]

約数ペア:

[(1, 21021303506), (2, 10510651753), (7, 3003043358), (14, 1501521679), (37, 568143338), (49, 429006194), (74, 284071669), (98, 214503097), (259, 81163334), (431, 48773326), (518, 40581667), (862, 24386663), (1813, 11594762), (3017, 6967618), (3626, 5797381), (6034, 3483809), (13451, 1562806), (15947, 1318198), (21119, 995374), (26902, 781403), (31894, 659099), (42238, 497687), (94157, 223258), (111629, 188314)]