28748275

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{173}}^1$

素因数の和:240

約数の個数: 36

約数和(自身を含む): 39742992

約数和(自身を除く): 10994717

約数列:

[1, 5, 17, 23, 25, 85, 115, 173, 289, 391, 425, 575, 865, 1445, 1955, 2941, 3979, 4325, 6647, 7225, 9775, 14705, 19895, 33235, 49997, 67643, 73525, 99475, 166175, 249985, 338215, 1149931, 1249925, 1691075, 5749655, 28748275]

約数ペア:

[(1, 28748275), (5, 5749655), (17, 1691075), (23, 1249925), (25, 1149931), (85, 338215), (115, 249985), (173, 166175), (289, 99475), (391, 73525), (425, 67643), (575, 49997), (865, 33235), (1445, 19895), (1955, 14705), (2941, 9775), (3979, 7225), (4325, 6647)]