28919163

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{409}}^1$

素因数の和:476

約数の個数: 48

約数和(自身を含む): 49731360

約数和(自身を除く): 20812197

約数列:

[1, 3, 7, 13, 21, 37, 39, 49, 91, 111, 147, 259, 273, 409, 481, 637, 777, 1227, 1443, 1813, 1911, 2863, 3367, 5317, 5439, 8589, 10101, 15133, 15951, 20041, 23569, 37219, 45399, 60123, 70707, 105931, 111657, 196729, 260533, 317793, 590187, 741517, 781599, 1377103, 2224551, 4131309, 9639721, 28919163]

約数ペア:

[(1, 28919163), (3, 9639721), (7, 4131309), (13, 2224551), (21, 1377103), (37, 781599), (39, 741517), (49, 590187), (91, 317793), (111, 260533), (147, 196729), (259, 111657), (273, 105931), (409, 70707), (481, 60123), (637, 45399), (777, 37219), (1227, 23569), (1443, 20041), (1813, 15951), (1911, 15133), (2863, 10101), (3367, 8589), (5317, 5439)]