12121240

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{389}}^1$

素因数の和:460

約数の個数: 64

約数和(自身を含む): 29484000

約数和(自身を除く): 17362760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 41, 76, 82, 95, 152, 164, 190, 205, 328, 380, 389, 410, 760, 778, 779, 820, 1556, 1558, 1640, 1945, 3112, 3116, 3890, 3895, 6232, 7391, 7780, 7790, 14782, 15560, 15580, 15949, 29564, 31160, 31898, 36955, 59128, 63796, 73910, 79745, 127592, 147820, 159490, 295640, 303031, 318980, 606062, 637960, 1212124, 1515155, 2424248, 3030310, 6060620, 12121240]

約数ペア:

[(1, 12121240), (2, 6060620), (4, 3030310), (5, 2424248), (8, 1515155), (10, 1212124), (19, 637960), (20, 606062), (38, 318980), (40, 303031), (41, 295640), (76, 159490), (82, 147820), (95, 127592), (152, 79745), (164, 73910), (190, 63796), (205, 59128), (328, 36955), (380, 31898), (389, 31160), (410, 29564), (760, 15949), (778, 15580), (779, 15560), (820, 14782), (1556, 7790), (1558, 7780), (1640, 7391), (1945, 6232), (3112, 3895), (3116, 3890)]