209212705

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{157}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 291453120

約数和(自身を除く): 82240415

約数列:

[1, 5, 13, 19, 65, 83, 95, 157, 169, 247, 415, 785, 845, 1079, 1235, 1577, 2041, 2983, 3211, 5395, 7885, 10205, 13031, 14027, 14915, 16055, 20501, 26533, 38779, 65155, 70135, 102505, 132665, 169403, 193895, 247589, 266513, 504127, 847015, 1237945, 1332565, 2202239, 2520635, 3218657, 11011195, 16093285, 41842541, 209212705]

約数ペア:

[(1, 209212705), (5, 41842541), (13, 16093285), (19, 11011195), (65, 3218657), (83, 2520635), (95, 2202239), (157, 1332565), (169, 1237945), (247, 847015), (415, 504127), (785, 266513), (845, 247589), (1079, 193895), (1235, 169403), (1577, 132665), (2041, 102505), (2983, 70135), (3211, 65155), (5395, 38779), (7885, 26533), (10205, 20501), (13031, 16055), (14027, 14915)]