19394375

素因数分解:

$5^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:82

約数の個数: 80

約数和(自身を含む): 33589248

約数和(自身を除く): 14194873

約数列:

[1, 5, 7, 11, 13, 25, 31, 35, 55, 65, 77, 91, 125, 143, 155, 175, 217, 275, 325, 341, 385, 403, 455, 625, 715, 775, 875, 1001, 1085, 1375, 1625, 1705, 1925, 2015, 2275, 2387, 2821, 3575, 3875, 4375, 4433, 5005, 5425, 6875, 8125, 8525, 9625, 10075, 11375, 11935, 14105, 17875, 19375, 22165, 25025, 27125, 31031, 42625, 48125, 50375, 56875, 59675, 70525, 89375, 110825, 125125, 135625, 155155, 213125, 251875, 298375, 352625, 554125, 625625, 775775, 1491875, 1763125, 2770625, 3878875, 19394375]

約数ペア:

[(1, 19394375), (5, 3878875), (7, 2770625), (11, 1763125), (13, 1491875), (25, 775775), (31, 625625), (35, 554125), (55, 352625), (65, 298375), (77, 251875), (91, 213125), (125, 155155), (143, 135625), (155, 125125), (175, 110825), (217, 89375), (275, 70525), (325, 59675), (341, 56875), (385, 50375), (403, 48125), (455, 42625), (625, 31031), (715, 27125), (775, 25025), (875, 22165), (1001, 19375), (1085, 17875), (1375, 14105), (1625, 11935), (1705, 11375), (1925, 10075), (2015, 9625), (2275, 8525), (2387, 8125), (2821, 6875), (3575, 5425), (3875, 5005), (4375, 4433)]