19751875

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1$

素因数の和:74

約数の個数: 60

約数和(自身を含む): 30871368

約数和(自身を除く): 11119493

約数列:

[1, 5, 11, 13, 17, 25, 55, 65, 85, 125, 143, 169, 187, 221, 275, 325, 425, 625, 715, 845, 935, 1105, 1375, 1625, 1859, 2125, 2431, 2873, 3575, 4225, 4675, 5525, 6875, 8125, 9295, 10625, 12155, 14365, 17875, 21125, 23375, 27625, 31603, 46475, 60775, 71825, 89375, 105625, 116875, 138125, 158015, 232375, 303875, 359125, 790075, 1161875, 1519375, 1795625, 3950375, 19751875]

約数ペア:

[(1, 19751875), (5, 3950375), (11, 1795625), (13, 1519375), (17, 1161875), (25, 790075), (55, 359125), (65, 303875), (85, 232375), (125, 158015), (143, 138125), (169, 116875), (187, 105625), (221, 89375), (275, 71825), (325, 60775), (425, 46475), (625, 31603), (715, 27625), (845, 23375), (935, 21125), (1105, 17875), (1375, 14365), (1625, 12155), (1859, 10625), (2125, 9295), (2431, 8125), (2873, 6875), (3575, 5525), (4225, 4675)]