20220.00000000

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1$

素因数の和:209

約数の個数: 64

約数和(自身を含む): 55847232

約数和(自身を除く): 26728714

約数列:

[1, 2, 11, 13, 17, 22, 26, 34, 53, 106, 113, 143, 187, 221, 226, 286, 374, 442, 583, 689, 901, 1166, 1243, 1378, 1469, 1802, 1921, 2431, 2486, 2938, 3842, 4862, 5989, 7579, 9911, 11713, 11978, 15158, 16159, 19822, 21131, 23426, 24973, 32318, 42262, 49946, 65879, 77857, 101813, 128843, 131758, 155714, 203626, 257686, 274703, 549406, 856427, 1119943, 1323569, 1712854, 2239886, 2647138, 14559259, 29118518]

約数ペア:

[(1, 29118518), (2, 14559259), (11, 2647138), (13, 2239886), (17, 1712854), (22, 1323569), (26, 1119943), (34, 856427), (53, 549406), (106, 274703), (113, 257686), (143, 203626), (187, 155714), (221, 131758), (226, 128843), (286, 101813), (374, 77857), (442, 65879), (583, 49946), (689, 42262), (901, 32318), (1166, 24973), (1243, 23426), (1378, 21131), (1469, 19822), (1802, 16159), (1921, 15158), (2431, 11978), (2486, 11713), (2938, 9911), (3842, 7579), (4862, 5989)]