1978976768

素因数分解:

$2^9\times {\mathrm{19}}^1\times {\mathrm{203431}}^1$

素因数の和:203468

約数の個数: 40

約数和(自身を含む): 4162218720

約数和(自身を除く): 2183241952

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 256, 304, 512, 608, 1216, 2432, 4864, 9728, 203431, 406862, 813724, 1627448, 3254896, 3865189, 6509792, 7730378, 13019584, 15460756, 26039168, 30921512, 52078336, 61843024, 104156672, 123686048, 247372096, 494744192, 989488384, 1978976768]

約数ペア:

[(1, 1978976768), (2, 989488384), (4, 494744192), (8, 247372096), (16, 123686048), (19, 104156672), (32, 61843024), (38, 52078336), (64, 30921512), (76, 26039168), (128, 15460756), (152, 13019584), (256, 7730378), (304, 6509792), (512, 3865189), (608, 3254896), (1216, 1627448), (2432, 813724), (4864, 406862), (9728, 203431)]