21774520

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{10271}}^1$

素因数の和:10335

約数の個数: 32

約数和(自身を含む): 49921920

約数和(自身を除く): 28147400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 10271, 20542, 41084, 51355, 82168, 102710, 205420, 410840, 544363, 1088726, 2177452, 2721815, 4354904, 5443630, 10887260, 21774520]

約数ペア:

[(1, 21774520), (2, 10887260), (4, 5443630), (5, 4354904), (8, 2721815), (10, 2177452), (20, 1088726), (40, 544363), (53, 410840), (106, 205420), (212, 102710), (265, 82168), (424, 51355), (530, 41084), (1060, 20542), (2120, 10271)]