20184080

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{271}}^1$

素因数の和:317

約数の個数: 120

約数和(自身を含む): 57674880

約数和(自身を除く): 37490800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 49, 56, 70, 76, 80, 95, 98, 112, 133, 140, 152, 190, 196, 245, 266, 271, 280, 304, 380, 392, 490, 532, 542, 560, 665, 760, 784, 931, 980, 1064, 1084, 1330, 1355, 1520, 1862, 1897, 1960, 2128, 2168, 2660, 2710, 3724, 3794, 3920, 4336, 4655, 5149, 5320, 5420, 7448, 7588, 9310, 9485, 10298, 10640, 10840, 13279, 14896, 15176, 18620, 18970, 20596, 21680, 25745, 26558, 30352, 36043, 37240, 37940, 41192, 51490, 53116, 66395, 72086, 74480, 75880, 82384, 102980, 106232, 132790, 144172, 151760, 180215, 205960, 212464, 252301, 265580, 288344, 360430, 411920, 504602, 531160, 576688, 720860, 1009204, 1062320, 1261505, 1441720, 2018408, 2523010, 2883440, 4036816, 5046020, 10092040, 20184080]

約数ペア:

[(1, 20184080), (2, 10092040), (4, 5046020), (5, 4036816), (7, 2883440), (8, 2523010), (10, 2018408), (14, 1441720), (16, 1261505), (19, 1062320), (20, 1009204), (28, 720860), (35, 576688), (38, 531160), (40, 504602), (49, 411920), (56, 360430), (70, 288344), (76, 265580), (80, 252301), (95, 212464), (98, 205960), (112, 180215), (133, 151760), (140, 144172), (152, 132790), (190, 106232), (196, 102980), (245, 82384), (266, 75880), (271, 74480), (280, 72086), (304, 66395), (380, 53116), (392, 51490), (490, 41192), (532, 37940), (542, 37240), (560, 36043), (665, 30352), (760, 26558), (784, 25745), (931, 21680), (980, 20596), (1064, 18970), (1084, 18620), (1330, 15176), (1355, 14896), (1520, 13279), (1862, 10840), (1897, 10640), (1960, 10298), (2128, 9485), (2168, 9310), (2660, 7588), (2710, 7448), (3724, 5420), (3794, 5320), (3920, 5149), (4336, 4655)]