21257928

素因数分解:

$2^3\times 3^2\times {\mathrm{29}}^1\times {\mathrm{10181}}^1$

素因数の和:10222

約数の個数: 48

約数和(自身を含む): 59564700

約数和(自身を除く): 38306772

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 29, 36, 58, 72, 87, 116, 174, 232, 261, 348, 522, 696, 1044, 2088, 10181, 20362, 30543, 40724, 61086, 81448, 91629, 122172, 183258, 244344, 295249, 366516, 590498, 733032, 885747, 1180996, 1771494, 2361992, 2657241, 3542988, 5314482, 7085976, 10628964, 21257928]

約数ペア:

[(1, 21257928), (2, 10628964), (3, 7085976), (4, 5314482), (6, 3542988), (8, 2657241), (9, 2361992), (12, 1771494), (18, 1180996), (24, 885747), (29, 733032), (36, 590498), (58, 366516), (72, 295249), (87, 244344), (116, 183258), (174, 122172), (232, 91629), (261, 81448), (348, 61086), (522, 40724), (696, 30543), (1044, 20362), (2088, 10181)]