12889340

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 28486080

約数和(自身を除く): 15596740

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 71, 116, 142, 145, 284, 290, 313, 355, 580, 626, 710, 1252, 1420, 1565, 2059, 3130, 4118, 6260, 8236, 9077, 10295, 18154, 20590, 22223, 36308, 41180, 44446, 45385, 88892, 90770, 111115, 181540, 222230, 444460, 644467, 1288934, 2577868, 3222335, 6444670, 12889340]

約数ペア:

[(1, 12889340), (2, 6444670), (4, 3222335), (5, 2577868), (10, 1288934), (20, 644467), (29, 444460), (58, 222230), (71, 181540), (116, 111115), (142, 90770), (145, 88892), (284, 45385), (290, 44446), (313, 41180), (355, 36308), (580, 22223), (626, 20590), (710, 18154), (1252, 10295), (1420, 9077), (1565, 8236), (2059, 6260), (3130, 4118)]