28401040

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{3257}}^1$

素因数の和:3379

約数の個数: 40

約数和(自身を含む): 66658680

約数和(自身を除く): 38257640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 3257, 4360, 6514, 8720, 13028, 16285, 26056, 32570, 52112, 65140, 130280, 260560, 355013, 710026, 1420052, 1775065, 2840104, 3550130, 5680208, 7100260, 14200520, 28401040]

約数ペア:

[(1, 28401040), (2, 14200520), (4, 7100260), (5, 5680208), (8, 3550130), (10, 2840104), (16, 1775065), (20, 1420052), (40, 710026), (80, 355013), (109, 260560), (218, 130280), (436, 65140), (545, 52112), (872, 32570), (1090, 26056), (1744, 16285), (2180, 13028), (3257, 8720), (4360, 6514)]