20921784786

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{1399}}^1\times {\mathrm{39563}}^1$

素因数の和:40980

約数の個数: 64

約数和(自身を含む): 53174016000

約数和(自身を除く): 32252231214

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 189, 378, 1399, 2798, 4197, 8394, 9793, 12591, 19586, 25182, 29379, 37773, 39563, 58758, 75546, 79126, 88137, 118689, 176274, 237378, 264411, 276941, 356067, 528822, 553882, 712134, 830823, 1068201, 1661646, 2136402, 2492469, 4984938, 7477407, 14954814, 55348637, 110697274, 166045911, 332091822, 387440459, 498137733, 774880918, 996275466, 1162321377, 1494413199, 2324642754, 2988826398, 3486964131, 6973928262, 10460892393, 20921784786]

約数ペア:

[(1, 20921784786), (2, 10460892393), (3, 6973928262), (6, 3486964131), (7, 2988826398), (9, 2324642754), (14, 1494413199), (18, 1162321377), (21, 996275466), (27, 774880918), (42, 498137733), (54, 387440459), (63, 332091822), (126, 166045911), (189, 110697274), (378, 55348637), (1399, 14954814), (2798, 7477407), (4197, 4984938), (8394, 2492469), (9793, 2136402), (12591, 1661646), (19586, 1068201), (25182, 830823), (29379, 712134), (37773, 553882), (39563, 528822), (58758, 356067), (75546, 276941), (79126, 264411), (88137, 237378), (118689, 176274)]