20785108976

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{467}}^1\times {\mathrm{146407}}^1$

素因数の和:146901

約数の個数: 40

約数和(自身を含む): 42481745280

約数和(自身を除く): 21696636304

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 467, 934, 1868, 3736, 7472, 8873, 17746, 35492, 70984, 141968, 146407, 292814, 585628, 1171256, 2342512, 2781733, 5563466, 11126932, 22253864, 44507728, 68372069, 136744138, 273488276, 546976552, 1093953104, 1299069311, 2598138622, 5196277244, 10392554488, 20785108976]

約数ペア:

[(1, 20785108976), (2, 10392554488), (4, 5196277244), (8, 2598138622), (16, 1299069311), (19, 1093953104), (38, 546976552), (76, 273488276), (152, 136744138), (304, 68372069), (467, 44507728), (934, 22253864), (1868, 11126932), (3736, 5563466), (7472, 2781733), (8873, 2342512), (17746, 1171256), (35492, 585628), (70984, 292814), (141968, 146407)]