21994307517

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{409}}^1\times {\mathrm{701}}^1$

素因数の和:1414

約数の個数: 64

約数和(自身を含む): 36362027520

約数和(自身を除く): 14367720003

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 281, 409, 701, 843, 1227, 1967, 2103, 2863, 3653, 4907, 5317, 5901, 8589, 9113, 10959, 14721, 15951, 25571, 27339, 37219, 63791, 76713, 111657, 114929, 191373, 196981, 286709, 344787, 590943, 804503, 860127, 1378867, 1494077, 2006963, 2413509, 2560753, 3727217, 4136601, 4482231, 6020889, 7682259, 10458539, 11181651, 17925271, 26090519, 31375617, 53775813, 78271557, 80565229, 241695687, 563956603, 1047347977, 1691869809, 3142043931, 7331435839, 21994307517]

約数ペア:

[(1, 21994307517), (3, 7331435839), (7, 3142043931), (13, 1691869809), (21, 1047347977), (39, 563956603), (91, 241695687), (273, 80565229), (281, 78271557), (409, 53775813), (701, 31375617), (843, 26090519), (1227, 17925271), (1967, 11181651), (2103, 10458539), (2863, 7682259), (3653, 6020889), (4907, 4482231), (5317, 4136601), (5901, 3727217), (8589, 2560753), (9113, 2413509), (10959, 2006963), (14721, 1494077), (15951, 1378867), (25571, 860127), (27339, 804503), (37219, 590943), (63791, 344787), (76713, 286709), (111657, 196981), (114929, 191373)]