19396280

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11827}}^1$

素因数の和:11879

約数の個数: 32

約数和(自身を含む): 44709840

約数和(自身を除く): 25313560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 11827, 23654, 47308, 59135, 94616, 118270, 236540, 473080, 484907, 969814, 1939628, 2424535, 3879256, 4849070, 9698140, 19396280]

約数ペア:

[(1, 19396280), (2, 9698140), (4, 4849070), (5, 3879256), (8, 2424535), (10, 1939628), (20, 969814), (40, 484907), (41, 473080), (82, 236540), (164, 118270), (205, 94616), (328, 59135), (410, 47308), (820, 23654), (1640, 11827)]