21987108

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4271}}^1$

素因数の和:4305

約数の個数: 72

約数和(自身を含む): 65310336

約数和(自身を除く): 43323228

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 13, 18, 22, 26, 33, 36, 39, 44, 52, 66, 78, 99, 117, 132, 143, 156, 198, 234, 286, 396, 429, 468, 572, 858, 1287, 1716, 2574, 4271, 5148, 8542, 12813, 17084, 25626, 38439, 46981, 51252, 55523, 76878, 93962, 111046, 140943, 153756, 166569, 187924, 222092, 281886, 333138, 422829, 499707, 563772, 610753, 666276, 845658, 999414, 1221506, 1691316, 1832259, 1998828, 2443012, 3664518, 5496777, 7329036, 10993554, 21987108]

約数ペア:

[(1, 21987108), (2, 10993554), (3, 7329036), (4, 5496777), (6, 3664518), (9, 2443012), (11, 1998828), (12, 1832259), (13, 1691316), (18, 1221506), (22, 999414), (26, 845658), (33, 666276), (36, 610753), (39, 563772), (44, 499707), (52, 422829), (66, 333138), (78, 281886), (99, 222092), (117, 187924), (132, 166569), (143, 153756), (156, 140943), (198, 111046), (234, 93962), (286, 76878), (396, 55523), (429, 51252), (468, 46981), (572, 38439), (858, 25626), (1287, 17084), (1716, 12813), (2574, 8542), (4271, 5148)]