19174995

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{197}}^1$

素因数の和:321

約数の個数: 64

約数和(自身を含む): 39536640

約数和(自身を除く): 20361645

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 103, 105, 135, 189, 197, 309, 315, 515, 591, 721, 927, 945, 985, 1379, 1545, 1773, 2163, 2781, 2955, 3605, 4137, 4635, 5319, 6489, 6895, 8865, 10815, 12411, 13905, 19467, 20291, 20685, 26595, 32445, 37233, 60873, 62055, 97335, 101455, 142037, 182619, 186165, 304365, 426111, 547857, 710185, 913095, 1278333, 2130555, 2739285, 3834999, 6391665, 19174995]

約数ペア:

[(1, 19174995), (3, 6391665), (5, 3834999), (7, 2739285), (9, 2130555), (15, 1278333), (21, 913095), (27, 710185), (35, 547857), (45, 426111), (63, 304365), (103, 186165), (105, 182619), (135, 142037), (189, 101455), (197, 97335), (309, 62055), (315, 60873), (515, 37233), (591, 32445), (721, 26595), (927, 20685), (945, 20291), (985, 19467), (1379, 13905), (1545, 12411), (1773, 10815), (2163, 8865), (2781, 6895), (2955, 6489), (3605, 5319), (4137, 4635)]