261771440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{887}}^1$

素因数の和:955

約数の個数: 160

約数和(自身を含む): 761094144

約数和(自身を除く): 499322704

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 31, 34, 35, 40, 56, 62, 68, 70, 80, 85, 112, 119, 124, 136, 140, 155, 170, 217, 238, 248, 272, 280, 310, 340, 434, 476, 496, 527, 560, 595, 620, 680, 868, 887, 952, 1054, 1085, 1190, 1240, 1360, 1736, 1774, 1904, 2108, 2170, 2380, 2480, 2635, 3472, 3548, 3689, 4216, 4340, 4435, 4760, 5270, 6209, 7096, 7378, 8432, 8680, 8870, 9520, 10540, 12418, 14192, 14756, 15079, 17360, 17740, 18445, 21080, 24836, 27497, 29512, 30158, 31045, 35480, 36890, 42160, 49672, 54994, 59024, 60316, 62090, 70960, 73780, 75395, 99344, 105553, 109988, 120632, 124180, 137485, 147560, 150790, 192479, 211106, 219976, 241264, 248360, 274970, 295120, 301580, 384958, 422212, 439952, 467449, 496720, 527765, 549940, 603160, 769916, 844424, 934898, 962395, 1055530, 1099880, 1206320, 1539832, 1688848, 1869796, 1924790, 2111060, 2199760, 2337245, 3079664, 3272143, 3739592, 3849580, 4222120, 4674490, 6544286, 7479184, 7699160, 8444240, 9348980, 13088572, 15398320, 16360715, 18697960, 26177144, 32721430, 37395920, 52354288, 65442860, 130885720, 261771440]

約数ペア:

[(1, 261771440), (2, 130885720), (4, 65442860), (5, 52354288), (7, 37395920), (8, 32721430), (10, 26177144), (14, 18697960), (16, 16360715), (17, 15398320), (20, 13088572), (28, 9348980), (31, 8444240), (34, 7699160), (35, 7479184), (40, 6544286), (56, 4674490), (62, 4222120), (68, 3849580), (70, 3739592), (80, 3272143), (85, 3079664), (112, 2337245), (119, 2199760), (124, 2111060), (136, 1924790), (140, 1869796), (155, 1688848), (170, 1539832), (217, 1206320), (238, 1099880), (248, 1055530), (272, 962395), (280, 934898), (310, 844424), (340, 769916), (434, 603160), (476, 549940), (496, 527765), (527, 496720), (560, 467449), (595, 439952), (620, 422212), (680, 384958), (868, 301580), (887, 295120), (952, 274970), (1054, 248360), (1085, 241264), (1190, 219976), (1240, 211106), (1360, 192479), (1736, 150790), (1774, 147560), (1904, 137485), (2108, 124180), (2170, 120632), (2380, 109988), (2480, 105553), (2635, 99344), (3472, 75395), (3548, 73780), (3689, 70960), (4216, 62090), (4340, 60316), (4435, 59024), (4760, 54994), (5270, 49672), (6209, 42160), (7096, 36890), (7378, 35480), (8432, 31045), (8680, 30158), (8870, 29512), (9520, 27497), (10540, 24836), (12418, 21080), (14192, 18445), (14756, 17740), (15079, 17360)]