19009540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1217}}^1$

素因数の和:1308

約数の個数: 48

約数和(自身を含む): 44198784

約数和(自身を除く): 25189244

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1217, 1420, 1562, 2434, 3124, 3905, 4868, 6085, 7810, 12170, 13387, 15620, 24340, 26774, 53548, 66935, 86407, 133870, 172814, 267740, 345628, 432035, 864070, 950477, 1728140, 1900954, 3801908, 4752385, 9504770, 19009540]

約数ペア:

[(1, 19009540), (2, 9504770), (4, 4752385), (5, 3801908), (10, 1900954), (11, 1728140), (20, 950477), (22, 864070), (44, 432035), (55, 345628), (71, 267740), (110, 172814), (142, 133870), (220, 86407), (284, 66935), (355, 53548), (710, 26774), (781, 24340), (1217, 15620), (1420, 13387), (1562, 12170), (2434, 7810), (3124, 6085), (3905, 4868)]