20201477975

素因数分解:

$5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{38569}}^1$

素因数の和:38700

約数の個数: 48

約数和(自身を含む): 29729138880

約数和(自身を除く): 9527660905

約数列:

[1, 5, 7, 25, 35, 41, 73, 175, 205, 287, 365, 511, 1025, 1435, 1825, 2555, 2993, 7175, 12775, 14965, 20951, 38569, 74825, 104755, 192845, 269983, 523775, 964225, 1349915, 1581329, 2815537, 6749575, 7906645, 11069303, 14077685, 19708759, 39533225, 55346515, 70388425, 98543795, 115437017, 276732575, 492718975, 577185085, 808059119, 2885925425, 4040295595, 20201477975]

約数ペア:

[(1, 20201477975), (5, 4040295595), (7, 2885925425), (25, 808059119), (35, 577185085), (41, 492718975), (73, 276732575), (175, 115437017), (205, 98543795), (287, 70388425), (365, 55346515), (511, 39533225), (1025, 19708759), (1435, 14077685), (1825, 11069303), (2555, 7906645), (2993, 6749575), (7175, 2815537), (12775, 1581329), (14965, 1349915), (20951, 964225), (38569, 523775), (74825, 269983), (104755, 192845)]