21123870

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{691}}^1\times {\mathrm{1019}}^1$

素因数の和:1720

約数の個数: 32

約数和(自身を含む): 50820480

約数和(自身を除く): 29696610

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 691, 1019, 1382, 2038, 2073, 3057, 3455, 4146, 5095, 6114, 6910, 10190, 10365, 15285, 20730, 30570, 704129, 1408258, 2112387, 3520645, 4224774, 7041290, 10561935, 21123870]

約数ペア:

[(1, 21123870), (2, 10561935), (3, 7041290), (5, 4224774), (6, 3520645), (10, 2112387), (15, 1408258), (30, 704129), (691, 30570), (1019, 20730), (1382, 15285), (2038, 10365), (2073, 10190), (3057, 6910), (3455, 6114), (4146, 5095)]