18989685

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{227}}^1$

素因数の和:275

約数の個数: 72

約数和(自身を含む): 39053664

約数和(自身を除く): 20063979

約数列:

[1, 3, 5, 9, 11, 13, 15, 33, 39, 45, 55, 65, 99, 117, 143, 165, 169, 195, 227, 429, 495, 507, 585, 681, 715, 845, 1135, 1287, 1521, 1859, 2043, 2145, 2497, 2535, 2951, 3405, 5577, 6435, 7491, 7605, 8853, 9295, 10215, 12485, 14755, 16731, 22473, 26559, 27885, 32461, 37455, 38363, 44265, 83655, 97383, 112365, 115089, 132795, 162305, 191815, 292149, 345267, 421993, 486915, 575445, 1265979, 1460745, 1726335, 2109965, 3797937, 6329895, 18989685]

約数ペア:

[(1, 18989685), (3, 6329895), (5, 3797937), (9, 2109965), (11, 1726335), (13, 1460745), (15, 1265979), (33, 575445), (39, 486915), (45, 421993), (55, 345267), (65, 292149), (99, 191815), (117, 162305), (143, 132795), (165, 115089), (169, 112365), (195, 97383), (227, 83655), (429, 44265), (495, 38363), (507, 37455), (585, 32461), (681, 27885), (715, 26559), (845, 22473), (1135, 16731), (1287, 14755), (1521, 12485), (1859, 10215), (2043, 9295), (2145, 8853), (2497, 7605), (2535, 7491), (2951, 6435), (3405, 5577)]