19936480

素因数分解:

$2^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2351}}^1$

素因数の和:2419

約数の個数: 48

約数和(自身を含む): 48009024

約数和(自身を除く): 28072544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 80, 106, 160, 212, 265, 424, 530, 848, 1060, 1696, 2120, 2351, 4240, 4702, 8480, 9404, 11755, 18808, 23510, 37616, 47020, 75232, 94040, 124603, 188080, 249206, 376160, 498412, 623015, 996824, 1246030, 1993648, 2492060, 3987296, 4984120, 9968240, 19936480]

約数ペア:

[(1, 19936480), (2, 9968240), (4, 4984120), (5, 3987296), (8, 2492060), (10, 1993648), (16, 1246030), (20, 996824), (32, 623015), (40, 498412), (53, 376160), (80, 249206), (106, 188080), (160, 124603), (212, 94040), (265, 75232), (424, 47020), (530, 37616), (848, 23510), (1060, 18808), (1696, 11755), (2120, 9404), (2351, 8480), (4240, 4702)]