16663855

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 23063040

約数和(自身を除く): 6399185

約数列:

[1, 5, 13, 19, 65, 95, 103, 131, 247, 515, 655, 1235, 1339, 1703, 1957, 2489, 6695, 8515, 9785, 12445, 13493, 25441, 32357, 67465, 127205, 161785, 175409, 256367, 877045, 1281835, 3332771, 16663855]

約数ペア:

[(1, 16663855), (5, 3332771), (13, 1281835), (19, 877045), (65, 256367), (95, 175409), (103, 161785), (131, 127205), (247, 67465), (515, 32357), (655, 25441), (1235, 13493), (1339, 12445), (1703, 9785), (1957, 8515), (2489, 6695)]