28567280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{367}}^1$

素因数の和:526

約数の個数: 80

約数和(自身を含む): 76661760

約数和(自身を除く): 48094480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 139, 140, 278, 280, 367, 556, 560, 695, 734, 973, 1112, 1390, 1468, 1835, 1946, 2224, 2569, 2780, 2936, 3670, 3892, 4865, 5138, 5560, 5872, 7340, 7784, 9730, 10276, 11120, 12845, 14680, 15568, 19460, 20552, 25690, 29360, 38920, 41104, 51013, 51380, 77840, 102026, 102760, 204052, 205520, 255065, 357091, 408104, 510130, 714182, 816208, 1020260, 1428364, 1785455, 2040520, 2856728, 3570910, 4081040, 5713456, 7141820, 14283640, 28567280]

約数ペア:

[(1, 28567280), (2, 14283640), (4, 7141820), (5, 5713456), (7, 4081040), (8, 3570910), (10, 2856728), (14, 2040520), (16, 1785455), (20, 1428364), (28, 1020260), (35, 816208), (40, 714182), (56, 510130), (70, 408104), (80, 357091), (112, 255065), (139, 205520), (140, 204052), (278, 102760), (280, 102026), (367, 77840), (556, 51380), (560, 51013), (695, 41104), (734, 38920), (973, 29360), (1112, 25690), (1390, 20552), (1468, 19460), (1835, 15568), (1946, 14680), (2224, 12845), (2569, 11120), (2780, 10276), (2936, 9730), (3670, 7784), (3892, 7340), (4865, 5872), (5138, 5560)]