20911990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{1259}}^1$

素因数の和:1428

約数の個数: 32

約数和(自身を含む): 41368320

約数和(自身を除く): 20456330

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 151, 302, 755, 1259, 1510, 1661, 2518, 3322, 6295, 8305, 12590, 13849, 16610, 27698, 69245, 138490, 190109, 380218, 950545, 1901090, 2091199, 4182398, 10455995, 20911990]

約数ペア:

[(1, 20911990), (2, 10455995), (5, 4182398), (10, 2091199), (11, 1901090), (22, 950545), (55, 380218), (110, 190109), (151, 138490), (302, 69245), (755, 27698), (1259, 16610), (1510, 13849), (1661, 12590), (2518, 8305), (3322, 6295)]