19879953

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{251}}^1\times {\mathrm{1553}}^1$

素因数の和:1824

約数の個数: 16

約数和(自身を含む): 28195776

約数和(自身を除く): 8315823

約数列:

[1, 3, 17, 51, 251, 753, 1553, 4267, 4659, 12801, 26401, 79203, 389803, 1169409, 6626651, 19879953]

約数ペア:

[(1, 19879953), (3, 6626651), (17, 1169409), (51, 389803), (251, 79203), (753, 26401), (1553, 12801), (4267, 4659)]