31853920

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{239}}^1$

素因数の和:285

約数の個数: 144

約数和(自身を含む): 93078720

約数和(自身を除く): 61224800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 32, 34, 35, 40, 49, 56, 68, 70, 80, 85, 98, 112, 119, 136, 140, 160, 170, 196, 224, 238, 239, 245, 272, 280, 340, 392, 476, 478, 490, 544, 560, 595, 680, 784, 833, 952, 956, 980, 1120, 1190, 1195, 1360, 1568, 1666, 1673, 1904, 1912, 1960, 2380, 2390, 2720, 3332, 3346, 3808, 3824, 3920, 4063, 4165, 4760, 4780, 6664, 6692, 7648, 7840, 8126, 8330, 8365, 9520, 9560, 11711, 13328, 13384, 16252, 16660, 16730, 19040, 19120, 20315, 23422, 26656, 26768, 28441, 32504, 33320, 33460, 38240, 40630, 46844, 53536, 56882, 58555, 65008, 66640, 66920, 81260, 93688, 113764, 117110, 130016, 133280, 133840, 142205, 162520, 187376, 199087, 227528, 234220, 267680, 284410, 325040, 374752, 398174, 455056, 468440, 568820, 650080, 796348, 910112, 936880, 995435, 1137640, 1592696, 1873760, 1990870, 2275280, 3185392, 3981740, 4550560, 6370784, 7963480, 15926960, 31853920]

約数ペア:

[(1, 31853920), (2, 15926960), (4, 7963480), (5, 6370784), (7, 4550560), (8, 3981740), (10, 3185392), (14, 2275280), (16, 1990870), (17, 1873760), (20, 1592696), (28, 1137640), (32, 995435), (34, 936880), (35, 910112), (40, 796348), (49, 650080), (56, 568820), (68, 468440), (70, 455056), (80, 398174), (85, 374752), (98, 325040), (112, 284410), (119, 267680), (136, 234220), (140, 227528), (160, 199087), (170, 187376), (196, 162520), (224, 142205), (238, 133840), (239, 133280), (245, 130016), (272, 117110), (280, 113764), (340, 93688), (392, 81260), (476, 66920), (478, 66640), (490, 65008), (544, 58555), (560, 56882), (595, 53536), (680, 46844), (784, 40630), (833, 38240), (952, 33460), (956, 33320), (980, 32504), (1120, 28441), (1190, 26768), (1195, 26656), (1360, 23422), (1568, 20315), (1666, 19120), (1673, 19040), (1904, 16730), (1912, 16660), (1960, 16252), (2380, 13384), (2390, 13328), (2720, 11711), (3332, 9560), (3346, 9520), (3808, 8365), (3824, 8330), (3920, 8126), (4063, 7840), (4165, 7648), (4760, 6692), (4780, 6664)]