28606825

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 41247360

約数和(自身を除く): 12640535

約数列:

[1, 5, 13, 23, 25, 43, 65, 89, 115, 215, 299, 325, 445, 559, 575, 989, 1075, 1157, 1495, 2047, 2225, 2795, 3827, 4945, 5785, 7475, 10235, 12857, 13975, 19135, 24725, 26611, 28925, 49751, 51175, 64285, 88021, 95675, 133055, 248755, 321425, 440105, 665275, 1144273, 1243775, 2200525, 5721365, 28606825]

約数ペア:

[(1, 28606825), (5, 5721365), (13, 2200525), (23, 1243775), (25, 1144273), (43, 665275), (65, 440105), (89, 321425), (115, 248755), (215, 133055), (299, 95675), (325, 88021), (445, 64285), (559, 51175), (575, 49751), (989, 28925), (1075, 26611), (1157, 24725), (1495, 19135), (2047, 13975), (2225, 12857), (2795, 10235), (3827, 7475), (4945, 5785)]