21906808

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:149

約数の個数: 96

約数和(自身を含む): 53434080

約数和(自身を除く): 31527272

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 53, 56, 61, 77, 88, 106, 121, 122, 154, 212, 242, 244, 308, 371, 424, 427, 484, 488, 583, 616, 671, 742, 847, 854, 968, 1166, 1342, 1484, 1694, 1708, 2332, 2684, 2968, 3233, 3388, 3416, 4081, 4664, 4697, 5368, 6413, 6466, 6776, 7381, 8162, 9394, 12826, 12932, 14762, 16324, 18788, 22631, 25652, 25864, 29524, 32648, 35563, 37576, 44891, 45262, 51304, 51667, 59048, 71126, 89782, 90524, 103334, 142252, 179564, 181048, 206668, 248941, 284504, 359128, 391193, 413336, 497882, 782386, 995764, 1564772, 1991528, 2738351, 3129544, 5476702, 10953404, 21906808]

約数ペア:

[(1, 21906808), (2, 10953404), (4, 5476702), (7, 3129544), (8, 2738351), (11, 1991528), (14, 1564772), (22, 995764), (28, 782386), (44, 497882), (53, 413336), (56, 391193), (61, 359128), (77, 284504), (88, 248941), (106, 206668), (121, 181048), (122, 179564), (154, 142252), (212, 103334), (242, 90524), (244, 89782), (308, 71126), (371, 59048), (424, 51667), (427, 51304), (484, 45262), (488, 44891), (583, 37576), (616, 35563), (671, 32648), (742, 29524), (847, 25864), (854, 25652), (968, 22631), (1166, 18788), (1342, 16324), (1484, 14762), (1694, 12932), (1708, 12826), (2332, 9394), (2684, 8162), (2968, 7381), (3233, 6776), (3388, 6466), (3416, 6413), (4081, 5368), (4664, 4697)]