20817692

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{359}}^1$

素因数の和:498

約数の個数: 48

約数和(自身を含む): 44352000

約数和(自身を除く): 23534308

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 109, 133, 218, 266, 359, 436, 532, 718, 763, 1436, 1526, 2071, 2513, 3052, 4142, 5026, 6821, 8284, 10052, 13642, 14497, 27284, 28994, 39131, 47747, 57988, 78262, 95494, 156524, 190988, 273917, 547834, 743489, 1095668, 1486978, 2973956, 5204423, 10408846, 20817692]

約数ペア:

[(1, 20817692), (2, 10408846), (4, 5204423), (7, 2973956), (14, 1486978), (19, 1095668), (28, 743489), (38, 547834), (76, 273917), (109, 190988), (133, 156524), (218, 95494), (266, 78262), (359, 57988), (436, 47747), (532, 39131), (718, 28994), (763, 27284), (1436, 14497), (1526, 13642), (2071, 10052), (2513, 8284), (3052, 6821), (4142, 5026)]