20161625

素因数分解:

$5^3\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:111

約数の個数: 48

約数和(自身を含む): 29213184

約数和(自身を除く): 9051559

約数列:

[1, 5, 11, 25, 31, 43, 55, 121, 125, 155, 215, 275, 341, 473, 605, 775, 1075, 1333, 1375, 1705, 2365, 3025, 3751, 3875, 5203, 5375, 6665, 8525, 11825, 14663, 15125, 18755, 26015, 33325, 42625, 59125, 73315, 93775, 130075, 161293, 166625, 366575, 468875, 650375, 806465, 1832875, 4032325, 20161625]

約数ペア:

[(1, 20161625), (5, 4032325), (11, 1832875), (25, 806465), (31, 650375), (43, 468875), (55, 366575), (121, 166625), (125, 161293), (155, 130075), (215, 93775), (275, 73315), (341, 59125), (473, 42625), (605, 33325), (775, 26015), (1075, 18755), (1333, 15125), (1375, 14663), (1705, 11825), (2365, 8525), (3025, 6665), (3751, 5375), (3875, 5203)]