20868364

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{73}}^2\times {\mathrm{89}}^1$

素因数の和:250

約数の個数: 36

約数和(自身を含む): 40846680

約数和(自身を除く): 19978316

約数列:

[1, 2, 4, 11, 22, 44, 73, 89, 146, 178, 292, 356, 803, 979, 1606, 1958, 3212, 3916, 5329, 6497, 10658, 12994, 21316, 25988, 58619, 71467, 117238, 142934, 234476, 285868, 474281, 948562, 1897124, 5217091, 10434182, 20868364]

約数ペア:

[(1, 20868364), (2, 10434182), (4, 5217091), (11, 1897124), (22, 948562), (44, 474281), (73, 285868), (89, 234476), (146, 142934), (178, 117238), (292, 71467), (356, 58619), (803, 25988), (979, 21316), (1606, 12994), (1958, 10658), (3212, 6497), (3916, 5329)]