21013784

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{7703}}^1$

素因数の和:7751

約数の個数: 32

約数和(自身を含む): 44375040

約数和(自身を除く): 23361256

約数列:

[1, 2, 4, 8, 11, 22, 31, 44, 62, 88, 124, 248, 341, 682, 1364, 2728, 7703, 15406, 30812, 61624, 84733, 169466, 238793, 338932, 477586, 677864, 955172, 1910344, 2626723, 5253446, 10506892, 21013784]

約数ペア:

[(1, 21013784), (2, 10506892), (4, 5253446), (8, 2626723), (11, 1910344), (22, 955172), (31, 677864), (44, 477586), (62, 338932), (88, 238793), (124, 169466), (248, 84733), (341, 61624), (682, 30812), (1364, 15406), (2728, 7703)]