20620665

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{349}}^1$

素因数の和:474

約数の個数: 48

約数和(自身を含む): 38984400

約数和(自身を除く): 18363735

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 101, 117, 195, 303, 349, 505, 585, 909, 1047, 1313, 1515, 1745, 3141, 3939, 4537, 4545, 5235, 6565, 11817, 13611, 15705, 19695, 22685, 35249, 40833, 59085, 68055, 105747, 176245, 204165, 317241, 458237, 528735, 1374711, 1586205, 2291185, 4124133, 6873555, 20620665]

約数ペア:

[(1, 20620665), (3, 6873555), (5, 4124133), (9, 2291185), (13, 1586205), (15, 1374711), (39, 528735), (45, 458237), (65, 317241), (101, 204165), (117, 176245), (195, 105747), (303, 68055), (349, 59085), (505, 40833), (585, 35249), (909, 22685), (1047, 19695), (1313, 15705), (1515, 13611), (1745, 11817), (3141, 6565), (3939, 5235), (4537, 4545)]