25420525

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 37122624

約数和(自身を除く): 11702099

約数列:

[1, 5, 13, 17, 25, 43, 65, 85, 107, 215, 221, 325, 425, 535, 559, 731, 1075, 1105, 1391, 1819, 2675, 2795, 3655, 4601, 5525, 6955, 9095, 9503, 13975, 18275, 23005, 23647, 34775, 45475, 47515, 59813, 78217, 115025, 118235, 237575, 299065, 391085, 591175, 1016821, 1495325, 1955425, 5084105, 25420525]

約数ペア:

[(1, 25420525), (5, 5084105), (13, 1955425), (17, 1495325), (25, 1016821), (43, 591175), (65, 391085), (85, 299065), (107, 237575), (215, 118235), (221, 115025), (325, 78217), (425, 59813), (535, 47515), (559, 45475), (731, 34775), (1075, 23647), (1105, 23005), (1391, 18275), (1819, 13975), (2675, 9503), (2795, 9095), (3655, 6955), (4601, 5525)]