81122725

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{193}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 114314112

約数和(自身を除く): 33191387

約数列:

[1, 5, 17, 23, 25, 43, 85, 115, 193, 215, 391, 425, 575, 731, 965, 989, 1075, 1955, 3281, 3655, 4439, 4825, 4945, 8299, 9775, 16405, 16813, 18275, 22195, 24725, 41495, 75463, 82025, 84065, 110975, 141083, 190877, 207475, 377315, 420325, 705415, 954385, 1886575, 3244909, 3527075, 4771925, 16224545, 81122725]

約数ペア:

[(1, 81122725), (5, 16224545), (17, 4771925), (23, 3527075), (25, 3244909), (43, 1886575), (85, 954385), (115, 705415), (193, 420325), (215, 377315), (391, 207475), (425, 190877), (575, 141083), (731, 110975), (965, 84065), (989, 82025), (1075, 75463), (1955, 41495), (3281, 24725), (3655, 22195), (4439, 18275), (4825, 16813), (4945, 16405), (8299, 9775)]