81831860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{19577}}^1$

素因数の和:19616

約数の個数: 48

約数和(自身を含む): 197346240

約数和(自身を除く): 115514380

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 19577, 39154, 78308, 97885, 195770, 215347, 371963, 391540, 430694, 743926, 861388, 1076735, 1487852, 1859815, 2153470, 3719630, 4091593, 4306940, 7439260, 8183186, 16366372, 20457965, 40915930, 81831860]

約数ペア:

[(1, 81831860), (2, 40915930), (4, 20457965), (5, 16366372), (10, 8183186), (11, 7439260), (19, 4306940), (20, 4091593), (22, 3719630), (38, 2153470), (44, 1859815), (55, 1487852), (76, 1076735), (95, 861388), (110, 743926), (190, 430694), (209, 391540), (220, 371963), (380, 215347), (418, 195770), (836, 97885), (1045, 78308), (2090, 39154), (4180, 19577)]