19715920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1$

素因数の和:165

約数の個数: 160

約数和(自身を含む): 58924800

約数和(自身を除く): 39208880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 19, 20, 28, 34, 35, 38, 40, 56, 68, 70, 76, 80, 85, 95, 109, 112, 119, 133, 136, 140, 152, 170, 190, 218, 238, 266, 272, 280, 304, 323, 340, 380, 436, 476, 532, 545, 560, 595, 646, 665, 680, 760, 763, 872, 952, 1064, 1090, 1190, 1292, 1330, 1360, 1520, 1526, 1615, 1744, 1853, 1904, 2071, 2128, 2180, 2261, 2380, 2584, 2660, 3052, 3230, 3706, 3815, 4142, 4360, 4522, 4760, 5168, 5320, 6104, 6460, 7412, 7630, 8284, 8720, 9044, 9265, 9520, 10355, 10640, 11305, 12208, 12920, 12971, 14497, 14824, 15260, 16568, 18088, 18530, 20710, 22610, 25840, 25942, 28994, 29648, 30520, 33136, 35207, 36176, 37060, 41420, 45220, 51884, 57988, 61040, 64855, 70414, 72485, 74120, 82840, 90440, 103768, 115976, 129710, 140828, 144970, 148240, 165680, 176035, 180880, 207536, 231952, 246449, 259420, 281656, 289940, 352070, 492898, 518840, 563312, 579880, 704140, 985796, 1037680, 1159760, 1232245, 1408280, 1971592, 2464490, 2816560, 3943184, 4928980, 9857960, 19715920]

約数ペア:

[(1, 19715920), (2, 9857960), (4, 4928980), (5, 3943184), (7, 2816560), (8, 2464490), (10, 1971592), (14, 1408280), (16, 1232245), (17, 1159760), (19, 1037680), (20, 985796), (28, 704140), (34, 579880), (35, 563312), (38, 518840), (40, 492898), (56, 352070), (68, 289940), (70, 281656), (76, 259420), (80, 246449), (85, 231952), (95, 207536), (109, 180880), (112, 176035), (119, 165680), (133, 148240), (136, 144970), (140, 140828), (152, 129710), (170, 115976), (190, 103768), (218, 90440), (238, 82840), (266, 74120), (272, 72485), (280, 70414), (304, 64855), (323, 61040), (340, 57988), (380, 51884), (436, 45220), (476, 41420), (532, 37060), (545, 36176), (560, 35207), (595, 33136), (646, 30520), (665, 29648), (680, 28994), (760, 25942), (763, 25840), (872, 22610), (952, 20710), (1064, 18530), (1090, 18088), (1190, 16568), (1292, 15260), (1330, 14824), (1360, 14497), (1520, 12971), (1526, 12920), (1615, 12208), (1744, 11305), (1853, 10640), (1904, 10355), (2071, 9520), (2128, 9265), (2180, 9044), (2261, 8720), (2380, 8284), (2584, 7630), (2660, 7412), (3052, 6460), (3230, 6104), (3706, 5320), (3815, 5168), (4142, 4760), (4360, 4522)]