21000587517

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{17599}}^1$

素因数の和:17703

約数の個数: 96

約数和(自身を含む): 39360921600

約数和(自身を除く): 18360334083

約数列:

[1, 3, 7, 9, 13, 21, 31, 39, 47, 63, 91, 93, 117, 141, 217, 273, 279, 329, 403, 423, 611, 651, 819, 987, 1209, 1457, 1833, 1953, 2821, 2961, 3627, 4277, 4371, 5499, 8463, 10199, 12831, 13113, 17599, 18941, 25389, 30597, 38493, 52797, 56823, 91791, 123193, 132587, 158391, 170469, 228787, 369579, 397761, 545569, 686361, 827153, 1108737, 1193283, 1601509, 1636707, 2059083, 2481459, 3818983, 4804527, 4910121, 5790071, 7092397, 7444377, 10752989, 11456949, 14413581, 17370213, 21277191, 25641743, 32258967, 34370847, 49646779, 52110639, 63831573, 75270923, 76925229, 96776901, 148940337, 179492201, 225812769, 230775687, 333342659, 446821011, 538476603, 677438307, 1000027977, 1615429809, 2333398613, 3000083931, 7000195839, 21000587517]

約数ペア:

[(1, 21000587517), (3, 7000195839), (7, 3000083931), (9, 2333398613), (13, 1615429809), (21, 1000027977), (31, 677438307), (39, 538476603), (47, 446821011), (63, 333342659), (91, 230775687), (93, 225812769), (117, 179492201), (141, 148940337), (217, 96776901), (273, 76925229), (279, 75270923), (329, 63831573), (403, 52110639), (423, 49646779), (611, 34370847), (651, 32258967), (819, 25641743), (987, 21277191), (1209, 17370213), (1457, 14413581), (1833, 11456949), (1953, 10752989), (2821, 7444377), (2961, 7092397), (3627, 5790071), (4277, 4910121), (4371, 4804527), (5499, 3818983), (8463, 2481459), (10199, 2059083), (12831, 1636707), (13113, 1601509), (17599, 1193283), (18941, 1108737), (25389, 827153), (30597, 686361), (38493, 545569), (52797, 397761), (56823, 369579), (91791, 228787), (123193, 170469), (132587, 158391)]