81581920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{3167}}^1$

素因数の和:3212

約数の個数: 96

約数和(自身を含む): 229920768

約数和(自身を除く): 148338848

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 160, 161, 184, 224, 230, 280, 322, 368, 460, 560, 644, 736, 805, 920, 1120, 1288, 1610, 1840, 2576, 3167, 3220, 3680, 5152, 6334, 6440, 12668, 12880, 15835, 22169, 25336, 25760, 31670, 44338, 50672, 63340, 72841, 88676, 101344, 110845, 126680, 145682, 177352, 221690, 253360, 291364, 354704, 364205, 443380, 506720, 509887, 582728, 709408, 728410, 886760, 1019774, 1165456, 1456820, 1773520, 2039548, 2330912, 2549435, 2913640, 3547040, 4079096, 5098870, 5827280, 8158192, 10197740, 11654560, 16316384, 20395480, 40790960, 81581920]

約数ペア:

[(1, 81581920), (2, 40790960), (4, 20395480), (5, 16316384), (7, 11654560), (8, 10197740), (10, 8158192), (14, 5827280), (16, 5098870), (20, 4079096), (23, 3547040), (28, 2913640), (32, 2549435), (35, 2330912), (40, 2039548), (46, 1773520), (56, 1456820), (70, 1165456), (80, 1019774), (92, 886760), (112, 728410), (115, 709408), (140, 582728), (160, 509887), (161, 506720), (184, 443380), (224, 364205), (230, 354704), (280, 291364), (322, 253360), (368, 221690), (460, 177352), (560, 145682), (644, 126680), (736, 110845), (805, 101344), (920, 88676), (1120, 72841), (1288, 63340), (1610, 50672), (1840, 44338), (2576, 31670), (3167, 25760), (3220, 25336), (3680, 22169), (5152, 15835), (6334, 12880), (6440, 12668)]