81981865

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:182

約数の個数: 64

約数和(自身を含む): 125706240

約数和(自身を除く): 43724375

約数列:

[1, 5, 7, 19, 35, 43, 47, 61, 95, 133, 215, 235, 301, 305, 329, 427, 665, 817, 893, 1159, 1505, 1645, 2021, 2135, 2623, 2867, 4085, 4465, 5719, 5795, 6251, 8113, 10105, 13115, 14147, 14335, 18361, 20069, 28595, 31255, 38399, 40565, 49837, 54473, 70735, 91805, 100345, 123281, 191995, 249185, 268793, 272365, 348859, 381311, 616405, 862967, 1343965, 1744295, 1906555, 2342339, 4314835, 11711695, 16396373, 81981865]

約数ペア:

[(1, 81981865), (5, 16396373), (7, 11711695), (19, 4314835), (35, 2342339), (43, 1906555), (47, 1744295), (61, 1343965), (95, 862967), (133, 616405), (215, 381311), (235, 348859), (301, 272365), (305, 268793), (329, 249185), (427, 191995), (665, 123281), (817, 100345), (893, 91805), (1159, 70735), (1505, 54473), (1645, 49837), (2021, 40565), (2135, 38399), (2623, 31255), (2867, 28595), (4085, 20069), (4465, 18361), (5719, 14335), (5795, 14147), (6251, 13115), (8113, 10105)]