21987130

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{1459}}^1$

素因数の和:1614

約数の個数: 32

約数和(自身を含む): 43519680

約数和(自身を除く): 21532550

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 137, 274, 685, 1370, 1459, 1507, 2918, 3014, 7295, 7535, 14590, 15070, 16049, 32098, 80245, 160490, 199883, 399766, 999415, 1998830, 2198713, 4397426, 10993565, 21987130]

約数ペア:

[(1, 21987130), (2, 10993565), (5, 4397426), (10, 2198713), (11, 1998830), (22, 999415), (55, 399766), (110, 199883), (137, 160490), (274, 80245), (685, 32098), (1370, 16049), (1459, 15070), (1507, 14590), (2918, 7535), (3014, 7295)]