20376279

素因数分解:

$3^7\times 7^1\times {\mathrm{11}}^3$

素因数の和:61

約数の個数: 64

約数和(自身を含む): 38415360

約数和(自身を除く): 18039081

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 81, 99, 121, 189, 231, 243, 297, 363, 567, 693, 729, 847, 891, 1089, 1331, 1701, 2079, 2187, 2541, 2673, 3267, 3993, 5103, 6237, 7623, 8019, 9317, 9801, 11979, 15309, 18711, 22869, 24057, 27951, 29403, 35937, 56133, 68607, 83853, 88209, 107811, 168399, 205821, 251559, 264627, 323433, 617463, 754677, 970299, 1852389, 2264031, 2910897, 6792093, 20376279]

約数ペア:

[(1, 20376279), (3, 6792093), (7, 2910897), (9, 2264031), (11, 1852389), (21, 970299), (27, 754677), (33, 617463), (63, 323433), (77, 264627), (81, 251559), (99, 205821), (121, 168399), (189, 107811), (231, 88209), (243, 83853), (297, 68607), (363, 56133), (567, 35937), (693, 29403), (729, 27951), (847, 24057), (891, 22869), (1089, 18711), (1331, 15309), (1701, 11979), (2079, 9801), (2187, 9317), (2541, 8019), (2673, 7623), (3267, 6237), (3993, 5103)]