72781345

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1553}}^1$

素因数の和:1681

約数の個数: 32

約数和(自身を含む): 108605952

約数和(自身を除く): 35824607

約数列:

[1, 5, 7, 13, 35, 65, 91, 103, 455, 515, 721, 1339, 1553, 3605, 6695, 7765, 9373, 10871, 20189, 46865, 54355, 100945, 141323, 159959, 706615, 799795, 1119713, 2079467, 5598565, 10397335, 14556269, 72781345]

約数ペア:

[(1, 72781345), (5, 14556269), (7, 10397335), (13, 5598565), (35, 2079467), (65, 1119713), (91, 799795), (103, 706615), (455, 159959), (515, 141323), (721, 100945), (1339, 54355), (1553, 46865), (3605, 20189), (6695, 10871), (7765, 9373)]