18590985

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{191}}^1$

素因数の和:315

約数の個数: 64

約数和(自身を含む): 38338560

約数和(自身を除く): 19747575

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 103, 105, 135, 189, 191, 309, 315, 515, 573, 721, 927, 945, 955, 1337, 1545, 1719, 2163, 2781, 2865, 3605, 4011, 4635, 5157, 6489, 6685, 8595, 10815, 12033, 13905, 19467, 19673, 20055, 25785, 32445, 36099, 59019, 60165, 97335, 98365, 137711, 177057, 180495, 295095, 413133, 531171, 688555, 885285, 1239399, 2065665, 2655855, 3718197, 6196995, 18590985]

約数ペア:

[(1, 18590985), (3, 6196995), (5, 3718197), (7, 2655855), (9, 2065665), (15, 1239399), (21, 885285), (27, 688555), (35, 531171), (45, 413133), (63, 295095), (103, 180495), (105, 177057), (135, 137711), (189, 98365), (191, 97335), (309, 60165), (315, 59019), (515, 36099), (573, 32445), (721, 25785), (927, 20055), (945, 19673), (955, 19467), (1337, 13905), (1545, 12033), (1719, 10815), (2163, 8595), (2781, 6685), (2865, 6489), (3605, 5157), (4011, 4635)]