28267720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54361}}^1$

素因数の和:54385

約数の個数: 32

約数和(自身を含む): 68496120

約数和(自身を除く): 40228400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 54361, 108722, 217444, 271805, 434888, 543610, 706693, 1087220, 1413386, 2174440, 2826772, 3533465, 5653544, 7066930, 14133860, 28267720]

約数ペア:

[(1, 28267720), (2, 14133860), (4, 7066930), (5, 5653544), (8, 3533465), (10, 2826772), (13, 2174440), (20, 1413386), (26, 1087220), (40, 706693), (52, 543610), (65, 434888), (104, 271805), (130, 217444), (260, 108722), (520, 54361)]