31378175

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:188

約数の個数: 36

約数和(自身を含む): 42712296

約数和(自身を除く): 11334121

約数列:

[1, 5, 17, 25, 43, 85, 101, 215, 289, 425, 505, 731, 1075, 1445, 1717, 2525, 3655, 4343, 7225, 8585, 12427, 18275, 21715, 29189, 42925, 62135, 73831, 108575, 145945, 310675, 369155, 729725, 1255127, 1845775, 6275635, 31378175]

約数ペア:

[(1, 31378175), (5, 6275635), (17, 1845775), (25, 1255127), (43, 729725), (85, 369155), (101, 310675), (215, 145945), (289, 108575), (425, 73831), (505, 62135), (731, 42925), (1075, 29189), (1445, 21715), (1717, 18275), (2525, 12427), (3655, 8585), (4343, 7225)]