21898695

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{263}}^1$

素因数の和:352

約数の個数: 64

約数和(自身を含む): 43997184

約数和(自身を除く): 22098489

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 61, 65, 91, 105, 183, 195, 263, 273, 305, 427, 455, 789, 793, 915, 1281, 1315, 1365, 1841, 2135, 2379, 3419, 3945, 3965, 5523, 5551, 6405, 9205, 10257, 11895, 16043, 16653, 17095, 23933, 27615, 27755, 48129, 51285, 71799, 80215, 83265, 112301, 119665, 208559, 240645, 336903, 358995, 561505, 625677, 1042795, 1459913, 1684515, 3128385, 4379739, 7299565, 21898695]

約数ペア:

[(1, 21898695), (3, 7299565), (5, 4379739), (7, 3128385), (13, 1684515), (15, 1459913), (21, 1042795), (35, 625677), (39, 561505), (61, 358995), (65, 336903), (91, 240645), (105, 208559), (183, 119665), (195, 112301), (263, 83265), (273, 80215), (305, 71799), (427, 51285), (455, 48129), (789, 27755), (793, 27615), (915, 23933), (1281, 17095), (1315, 16653), (1365, 16043), (1841, 11895), (2135, 10257), (2379, 9205), (3419, 6405), (3945, 5551), (3965, 5523)]