21377818

素因数分解:

$2^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{2833}}^1$

素因数の和:2867

約数の個数: 32

約数和(自身を含む): 40809600

約数和(自身を除く): 19431782

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 154, 343, 539, 686, 1078, 2833, 3773, 5666, 7546, 19831, 31163, 39662, 62326, 138817, 218141, 277634, 436282, 971719, 1526987, 1943438, 3053974, 10688909, 21377818]

約数ペア:

[(1, 21377818), (2, 10688909), (7, 3053974), (11, 1943438), (14, 1526987), (22, 971719), (49, 436282), (77, 277634), (98, 218141), (154, 138817), (343, 62326), (539, 39662), (686, 31163), (1078, 19831), (2833, 7546), (3773, 5666)]