20995040

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{151}}^1$

素因数の和:256

約数の個数: 96

約数和(自身を含む): 55157760

約数和(自身を除く): 34162720

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 79, 80, 88, 110, 151, 158, 160, 176, 220, 302, 316, 352, 395, 440, 604, 632, 755, 790, 869, 880, 1208, 1264, 1510, 1580, 1661, 1738, 1760, 2416, 2528, 3020, 3160, 3322, 3476, 4345, 4832, 6040, 6320, 6644, 6952, 8305, 8690, 11929, 12080, 12640, 13288, 13904, 16610, 17380, 23858, 24160, 26576, 27808, 33220, 34760, 47716, 53152, 59645, 66440, 69520, 95432, 119290, 131219, 132880, 139040, 190864, 238580, 262438, 265760, 381728, 477160, 524876, 656095, 954320, 1049752, 1312190, 1908640, 2099504, 2624380, 4199008, 5248760, 10497520, 20995040]

約数ペア:

[(1, 20995040), (2, 10497520), (4, 5248760), (5, 4199008), (8, 2624380), (10, 2099504), (11, 1908640), (16, 1312190), (20, 1049752), (22, 954320), (32, 656095), (40, 524876), (44, 477160), (55, 381728), (79, 265760), (80, 262438), (88, 238580), (110, 190864), (151, 139040), (158, 132880), (160, 131219), (176, 119290), (220, 95432), (302, 69520), (316, 66440), (352, 59645), (395, 53152), (440, 47716), (604, 34760), (632, 33220), (755, 27808), (790, 26576), (869, 24160), (880, 23858), (1208, 17380), (1264, 16610), (1510, 13904), (1580, 13288), (1661, 12640), (1738, 12080), (1760, 11929), (2416, 8690), (2528, 8305), (3020, 6952), (3160, 6644), (3322, 6320), (3476, 6040), (4345, 4832)]