18953545

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 26208000

約数和(自身を除く): 7254455

約数列:

[1, 5, 13, 19, 65, 95, 103, 149, 247, 515, 745, 1235, 1339, 1937, 1957, 2831, 6695, 9685, 9785, 14155, 15347, 25441, 36803, 76735, 127205, 184015, 199511, 291593, 997555, 1457965, 3790709, 18953545]

約数ペア:

[(1, 18953545), (5, 3790709), (13, 1457965), (19, 997555), (65, 291593), (95, 199511), (103, 184015), (149, 127205), (247, 76735), (515, 36803), (745, 25441), (1235, 15347), (1339, 14155), (1937, 9785), (1957, 9685), (2831, 6695)]