20993618

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:266

約数の個数: 32

約数和(自身を含む): 34214400

約数和(自身を除く): 13220782

約数列:

[1, 2, 23, 46, 53, 79, 106, 109, 158, 218, 1219, 1817, 2438, 2507, 3634, 4187, 5014, 5777, 8374, 8611, 11554, 17222, 96301, 132871, 192602, 198053, 265742, 396106, 456383, 912766, 10496809, 20993618]

約数ペア:

[(1, 20993618), (2, 10496809), (23, 912766), (46, 456383), (53, 396106), (79, 265742), (106, 198053), (109, 192602), (158, 132871), (218, 96301), (1219, 17222), (1817, 11554), (2438, 8611), (2507, 8374), (3634, 5777), (4187, 5014)]