20041280

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{389}}^1$

素因数の和:436

約数の個数: 112

約数和(自身を含む): 57058560

約数和(自身を除く): 37017280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 56, 64, 70, 80, 92, 112, 115, 140, 160, 161, 184, 224, 230, 280, 320, 322, 368, 389, 448, 460, 560, 644, 736, 778, 805, 920, 1120, 1288, 1472, 1556, 1610, 1840, 1945, 2240, 2576, 2723, 3112, 3220, 3680, 3890, 5152, 5446, 6224, 6440, 7360, 7780, 8947, 10304, 10892, 12448, 12880, 13615, 15560, 17894, 21784, 24896, 25760, 27230, 31120, 35788, 43568, 44735, 51520, 54460, 62240, 62629, 71576, 87136, 89470, 108920, 124480, 125258, 143152, 174272, 178940, 217840, 250516, 286304, 313145, 357880, 435680, 501032, 572608, 626290, 715760, 871360, 1002064, 1252580, 1431520, 2004128, 2505160, 2863040, 4008256, 5010320, 10020640, 20041280]

約数ペア:

[(1, 20041280), (2, 10020640), (4, 5010320), (5, 4008256), (7, 2863040), (8, 2505160), (10, 2004128), (14, 1431520), (16, 1252580), (20, 1002064), (23, 871360), (28, 715760), (32, 626290), (35, 572608), (40, 501032), (46, 435680), (56, 357880), (64, 313145), (70, 286304), (80, 250516), (92, 217840), (112, 178940), (115, 174272), (140, 143152), (160, 125258), (161, 124480), (184, 108920), (224, 89470), (230, 87136), (280, 71576), (320, 62629), (322, 62240), (368, 54460), (389, 51520), (448, 44735), (460, 43568), (560, 35788), (644, 31120), (736, 27230), (778, 25760), (805, 24896), (920, 21784), (1120, 17894), (1288, 15560), (1472, 13615), (1556, 12880), (1610, 12448), (1840, 10892), (1945, 10304), (2240, 8947), (2576, 7780), (2723, 7360), (3112, 6440), (3220, 6224), (3680, 5446), (3890, 5152)]