20951895

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1\times {\mathrm{263}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 34670592

約数和(自身を除く): 13718697

約数列:

[1, 3, 5, 15, 47, 113, 141, 235, 263, 339, 565, 705, 789, 1315, 1695, 3945, 5311, 12361, 15933, 26555, 29719, 37083, 61805, 79665, 89157, 148595, 185415, 445785, 1396793, 4190379, 6983965, 20951895]

約数ペア:

[(1, 20951895), (3, 6983965), (5, 4190379), (15, 1396793), (47, 445785), (113, 185415), (141, 148595), (235, 89157), (263, 79665), (339, 61805), (565, 37083), (705, 29719), (789, 26555), (1315, 15933), (1695, 12361), (3945, 5311)]