28921977

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{251}}^1$

素因数の和:354

約数の個数: 48

約数和(自身を含む): 50319360

約数和(自身を除く): 21397383

約数列:

[1, 3, 7, 9, 21, 31, 59, 63, 93, 177, 217, 251, 279, 413, 531, 651, 753, 1239, 1757, 1829, 1953, 2259, 3717, 5271, 5487, 7781, 12803, 14809, 15813, 16461, 23343, 38409, 44427, 54467, 70029, 103663, 115227, 133281, 163401, 310989, 459079, 490203, 932967, 1377237, 3213553, 4131711, 9640659, 28921977]

約数ペア:

[(1, 28921977), (3, 9640659), (7, 4131711), (9, 3213553), (21, 1377237), (31, 932967), (59, 490203), (63, 459079), (93, 310989), (177, 163401), (217, 133281), (251, 115227), (279, 103663), (413, 70029), (531, 54467), (651, 44427), (753, 38409), (1239, 23343), (1757, 16461), (1829, 15813), (1953, 14809), (2259, 12803), (3717, 7781), (5271, 5487)]