18775705

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{661}}^1$

素因数の和:721

約数の個数: 32

約数和(自身を含む): 26691840

約数和(自身を除く): 7916135

約数列:

[1, 5, 13, 19, 23, 65, 95, 115, 247, 299, 437, 661, 1235, 1495, 2185, 3305, 5681, 8593, 12559, 15203, 28405, 42965, 62795, 76015, 163267, 197639, 288857, 816335, 988195, 1444285, 3755141, 18775705]

約数ペア:

[(1, 18775705), (5, 3755141), (13, 1444285), (19, 988195), (23, 816335), (65, 288857), (95, 197639), (115, 163267), (247, 76015), (299, 62795), (437, 42965), (661, 28405), (1235, 15203), (1495, 12559), (2185, 8593), (3305, 5681)]