209194775

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{21401}}^1$

素因数の和:21451

約数の個数: 24

約数和(自身を含む): 286615584

約数和(自身を除く): 77420809

約数列:

[1, 5, 17, 23, 25, 85, 115, 391, 425, 575, 1955, 9775, 21401, 107005, 363817, 492223, 535025, 1819085, 2461115, 8367791, 9095425, 12305575, 41838955, 209194775]

約数ペア:

[(1, 209194775), (5, 41838955), (17, 12305575), (23, 9095425), (25, 8367791), (85, 2461115), (115, 1819085), (391, 535025), (425, 492223), (575, 363817), (1955, 107005), (9775, 21401)]