21473361

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{167}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 38648064

約数和(自身を除く): 17174703

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 157, 167, 273, 471, 501, 819, 1099, 1169, 1413, 1503, 2041, 2171, 3297, 3507, 6123, 6513, 9891, 10521, 14287, 15197, 18369, 19539, 26219, 42861, 45591, 78657, 128583, 136773, 183533, 235971, 340847, 550599, 1022541, 1651797, 2385929, 3067623, 7157787, 21473361]

約数ペア:

[(1, 21473361), (3, 7157787), (7, 3067623), (9, 2385929), (13, 1651797), (21, 1022541), (39, 550599), (63, 340847), (91, 235971), (117, 183533), (157, 136773), (167, 128583), (273, 78657), (471, 45591), (501, 42861), (819, 26219), (1099, 19539), (1169, 18369), (1413, 15197), (1503, 14287), (2041, 10521), (2171, 9891), (3297, 6513), (3507, 6123)]