20853640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1193}}^1$

素因数の和:1246

約数の個数: 64

約数和(自身を含む): 51580800

約数和(自身を除く): 30727160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 23, 38, 40, 46, 76, 92, 95, 115, 152, 184, 190, 230, 380, 437, 460, 760, 874, 920, 1193, 1748, 2185, 2386, 3496, 4370, 4772, 5965, 8740, 9544, 11930, 17480, 22667, 23860, 27439, 45334, 47720, 54878, 90668, 109756, 113335, 137195, 181336, 219512, 226670, 274390, 453340, 521341, 548780, 906680, 1042682, 1097560, 2085364, 2606705, 4170728, 5213410, 10426820, 20853640]

約数ペア:

[(1, 20853640), (2, 10426820), (4, 5213410), (5, 4170728), (8, 2606705), (10, 2085364), (19, 1097560), (20, 1042682), (23, 906680), (38, 548780), (40, 521341), (46, 453340), (76, 274390), (92, 226670), (95, 219512), (115, 181336), (152, 137195), (184, 113335), (190, 109756), (230, 90668), (380, 54878), (437, 47720), (460, 45334), (760, 27439), (874, 23860), (920, 22667), (1193, 17480), (1748, 11930), (2185, 9544), (2386, 8740), (3496, 5965), (4370, 4772)]