31191680

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1$

素因数の和:218

約数の個数: 128

約数和(自身を含む): 84309120

約数和(自身を除く): 53117440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 32, 40, 46, 52, 64, 65, 80, 92, 104, 115, 128, 130, 160, 163, 184, 208, 230, 260, 299, 320, 326, 368, 416, 460, 520, 598, 640, 652, 736, 815, 832, 920, 1040, 1196, 1304, 1472, 1495, 1630, 1664, 1840, 2080, 2119, 2392, 2608, 2944, 2990, 3260, 3680, 3749, 4160, 4238, 4784, 5216, 5980, 6520, 7360, 7498, 8320, 8476, 9568, 10432, 10595, 11960, 13040, 14720, 14996, 16952, 18745, 19136, 20864, 21190, 23920, 26080, 29992, 33904, 37490, 38272, 42380, 47840, 48737, 52160, 59984, 67808, 74980, 84760, 95680, 97474, 104320, 119968, 135616, 149960, 169520, 191360, 194948, 239936, 243685, 271232, 299920, 339040, 389896, 479872, 487370, 599840, 678080, 779792, 974740, 1199680, 1356160, 1559584, 1949480, 2399360, 3119168, 3898960, 6238336, 7797920, 15595840, 31191680]

約数ペア:

[(1, 31191680), (2, 15595840), (4, 7797920), (5, 6238336), (8, 3898960), (10, 3119168), (13, 2399360), (16, 1949480), (20, 1559584), (23, 1356160), (26, 1199680), (32, 974740), (40, 779792), (46, 678080), (52, 599840), (64, 487370), (65, 479872), (80, 389896), (92, 339040), (104, 299920), (115, 271232), (128, 243685), (130, 239936), (160, 194948), (163, 191360), (184, 169520), (208, 149960), (230, 135616), (260, 119968), (299, 104320), (320, 97474), (326, 95680), (368, 84760), (416, 74980), (460, 67808), (520, 59984), (598, 52160), (640, 48737), (652, 47840), (736, 42380), (815, 38272), (832, 37490), (920, 33904), (1040, 29992), (1196, 26080), (1304, 23920), (1472, 21190), (1495, 20864), (1630, 19136), (1664, 18745), (1840, 16952), (2080, 14996), (2119, 14720), (2392, 13040), (2608, 11960), (2944, 10595), (2990, 10432), (3260, 9568), (3680, 8476), (3749, 8320), (4160, 7498), (4238, 7360), (4784, 6520), (5216, 5980)]