21136930

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2099}}^1$

素因数の和:2178

約数の個数: 32

約数和(自身を含む): 40824000

約数和(自身を除く): 19687070

約数列:

[1, 2, 5, 10, 19, 38, 53, 95, 106, 190, 265, 530, 1007, 2014, 2099, 4198, 5035, 10070, 10495, 20990, 39881, 79762, 111247, 199405, 222494, 398810, 556235, 1112470, 2113693, 4227386, 10568465, 21136930]

約数ペア:

[(1, 21136930), (2, 10568465), (5, 4227386), (10, 2113693), (19, 1112470), (38, 556235), (53, 398810), (95, 222494), (106, 199405), (190, 111247), (265, 79762), (530, 39881), (1007, 20990), (2014, 10495), (2099, 10070), (4198, 5035)]