18853962625

素因数分解:

$5^3\times {\mathrm{17}}^2\times {\mathrm{557}}^1\times {\mathrm{937}}^1$

素因数の和:1543

約数の個数: 48

約数和(自身を含む): 25066864368

約数和(自身を除く): 6212901743

約数列:

[1, 5, 17, 25, 85, 125, 289, 425, 557, 937, 1445, 2125, 2785, 4685, 7225, 9469, 13925, 15929, 23425, 36125, 47345, 69625, 79645, 117125, 160973, 236725, 270793, 398225, 521909, 804865, 1183625, 1353965, 1991125, 2609545, 4024325, 6769825, 8872453, 13047725, 20121625, 33849125, 44362265, 65238625, 150831701, 221811325, 754158505, 1109056625, 3770792525, 18853962625]

約数ペア:

[(1, 18853962625), (5, 3770792525), (17, 1109056625), (25, 754158505), (85, 221811325), (125, 150831701), (289, 65238625), (425, 44362265), (557, 33849125), (937, 20121625), (1445, 13047725), (2125, 8872453), (2785, 6769825), (4685, 4024325), (7225, 2609545), (9469, 1991125), (13925, 1353965), (15929, 1183625), (23425, 804865), (36125, 521909), (47345, 398225), (69625, 270793), (79645, 236725), (117125, 160973)]