19804070

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{1259}}^1$

素因数の和:1301

約数の個数: 48

約数和(自身を含む): 42230160

約数和(自身を除く): 22426090

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 121, 130, 143, 242, 286, 605, 715, 1210, 1259, 1430, 1573, 2518, 3146, 6295, 7865, 12590, 13849, 15730, 16367, 27698, 32734, 69245, 81835, 138490, 152339, 163670, 180037, 304678, 360074, 761695, 900185, 1523390, 1800370, 1980407, 3960814, 9902035, 19804070]

約数ペア:

[(1, 19804070), (2, 9902035), (5, 3960814), (10, 1980407), (11, 1800370), (13, 1523390), (22, 900185), (26, 761695), (55, 360074), (65, 304678), (110, 180037), (121, 163670), (130, 152339), (143, 138490), (242, 81835), (286, 69245), (605, 32734), (715, 27698), (1210, 16367), (1259, 15730), (1430, 13849), (1573, 12590), (2518, 7865), (3146, 6295)]