20269808

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{223}}^1$

素因数の和:286

約数の個数: 80

約数和(自身を含む): 46663680

約数和(自身を除く): 26393872

約数列:

[1, 2, 4, 8, 13, 16, 19, 23, 26, 38, 46, 52, 76, 92, 104, 152, 184, 208, 223, 247, 299, 304, 368, 437, 446, 494, 598, 874, 892, 988, 1196, 1748, 1784, 1976, 2392, 2899, 3496, 3568, 3952, 4237, 4784, 5129, 5681, 5798, 6992, 8474, 10258, 11362, 11596, 16948, 20516, 22724, 23192, 33896, 41032, 45448, 46384, 55081, 66677, 67792, 82064, 90896, 97451, 110162, 133354, 194902, 220324, 266708, 389804, 440648, 533416, 779608, 881296, 1066832, 1266863, 1559216, 2533726, 5067452, 10134904, 20269808]

約数ペア:

[(1, 20269808), (2, 10134904), (4, 5067452), (8, 2533726), (13, 1559216), (16, 1266863), (19, 1066832), (23, 881296), (26, 779608), (38, 533416), (46, 440648), (52, 389804), (76, 266708), (92, 220324), (104, 194902), (152, 133354), (184, 110162), (208, 97451), (223, 90896), (247, 82064), (299, 67792), (304, 66677), (368, 55081), (437, 46384), (446, 45448), (494, 41032), (598, 33896), (874, 23192), (892, 22724), (988, 20516), (1196, 16948), (1748, 11596), (1784, 11362), (1976, 10258), (2392, 8474), (2899, 6992), (3496, 5798), (3568, 5681), (3952, 5129), (4237, 4784)]