28013180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{661}}^1$

素因数の和:846

約数の個数: 48

約数和(自身を含む): 63837984

約数和(自身を除く): 35824804

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 163, 260, 326, 652, 661, 815, 1322, 1630, 2119, 2644, 3260, 3305, 4238, 6610, 8476, 8593, 10595, 13220, 17186, 21190, 34372, 42380, 42965, 85930, 107743, 171860, 215486, 430972, 538715, 1077430, 1400659, 2154860, 2801318, 5602636, 7003295, 14006590, 28013180]

約数ペア:

[(1, 28013180), (2, 14006590), (4, 7003295), (5, 5602636), (10, 2801318), (13, 2154860), (20, 1400659), (26, 1077430), (52, 538715), (65, 430972), (130, 215486), (163, 171860), (260, 107743), (326, 85930), (652, 42965), (661, 42380), (815, 34372), (1322, 21190), (1630, 17186), (2119, 13220), (2644, 10595), (3260, 8593), (3305, 8476), (4238, 6610)]