251019280

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{379}}^1\times {\mathrm{487}}^1$

素因数の和:896

約数の個数: 80

約数和(自身を含む): 620853120

約数和(自身を除く): 369833840

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 379, 487, 680, 758, 974, 1360, 1516, 1895, 1948, 2435, 3032, 3790, 3896, 4870, 6064, 6443, 7580, 7792, 8279, 9740, 12886, 15160, 16558, 19480, 25772, 30320, 32215, 33116, 38960, 41395, 51544, 64430, 66232, 82790, 103088, 128860, 132464, 165580, 184573, 257720, 331160, 369146, 515440, 662320, 738292, 922865, 1476584, 1845730, 2953168, 3137741, 3691460, 6275482, 7382920, 12550964, 14765840, 15688705, 25101928, 31377410, 50203856, 62754820, 125509640, 251019280]

約数ペア:

[(1, 251019280), (2, 125509640), (4, 62754820), (5, 50203856), (8, 31377410), (10, 25101928), (16, 15688705), (17, 14765840), (20, 12550964), (34, 7382920), (40, 6275482), (68, 3691460), (80, 3137741), (85, 2953168), (136, 1845730), (170, 1476584), (272, 922865), (340, 738292), (379, 662320), (487, 515440), (680, 369146), (758, 331160), (974, 257720), (1360, 184573), (1516, 165580), (1895, 132464), (1948, 128860), (2435, 103088), (3032, 82790), (3790, 66232), (3896, 64430), (4870, 51544), (6064, 41395), (6443, 38960), (7580, 33116), (7792, 32215), (8279, 30320), (9740, 25772), (12886, 19480), (15160, 16558)]