18886868

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:177

約数の個数: 96

約数和(自身を含む): 45722880

約数和(自身を除く): 26836012

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 53, 77, 89, 91, 106, 143, 154, 178, 182, 212, 286, 308, 356, 364, 371, 572, 583, 623, 689, 742, 979, 1001, 1157, 1166, 1246, 1378, 1484, 1958, 2002, 2314, 2332, 2492, 2756, 3916, 4004, 4081, 4628, 4717, 4823, 6853, 7579, 8099, 8162, 9434, 9646, 12727, 13706, 15158, 16198, 16324, 18868, 19292, 25454, 27412, 30316, 32396, 33019, 50908, 51887, 53053, 61321, 66038, 89089, 103774, 106106, 122642, 132076, 178178, 207548, 212212, 245284, 356356, 363209, 429247, 674531, 726418, 858494, 1349062, 1452836, 1716988, 2698124, 4721717, 9443434, 18886868]

約数ペア:

[(1, 18886868), (2, 9443434), (4, 4721717), (7, 2698124), (11, 1716988), (13, 1452836), (14, 1349062), (22, 858494), (26, 726418), (28, 674531), (44, 429247), (52, 363209), (53, 356356), (77, 245284), (89, 212212), (91, 207548), (106, 178178), (143, 132076), (154, 122642), (178, 106106), (182, 103774), (212, 89089), (286, 66038), (308, 61321), (356, 53053), (364, 51887), (371, 50908), (572, 33019), (583, 32396), (623, 30316), (689, 27412), (742, 25454), (979, 19292), (1001, 18868), (1157, 16324), (1166, 16198), (1246, 15158), (1378, 13706), (1484, 12727), (1958, 9646), (2002, 9434), (2314, 8162), (2332, 8099), (2492, 7579), (2756, 6853), (3916, 4823), (4004, 4717), (4081, 4628)]