21070638

素因数分解:

$2^1\times 3^3\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{307}}^1$

素因数の和:390

約数の個数: 64

約数和(自身を含む): 49674240

約数和(自身を除く): 28603602

約数列:

[1, 2, 3, 6, 9, 18, 27, 31, 41, 54, 62, 82, 93, 123, 186, 246, 279, 307, 369, 558, 614, 738, 837, 921, 1107, 1271, 1674, 1842, 2214, 2542, 2763, 3813, 5526, 7626, 8289, 9517, 11439, 12587, 16578, 19034, 22878, 25174, 28551, 34317, 37761, 57102, 68634, 75522, 85653, 113283, 171306, 226566, 256959, 339849, 390197, 513918, 679698, 780394, 1170591, 2341182, 3511773, 7023546, 10535319, 21070638]

約数ペア:

[(1, 21070638), (2, 10535319), (3, 7023546), (6, 3511773), (9, 2341182), (18, 1170591), (27, 780394), (31, 679698), (41, 513918), (54, 390197), (62, 339849), (82, 256959), (93, 226566), (123, 171306), (186, 113283), (246, 85653), (279, 75522), (307, 68634), (369, 57102), (558, 37761), (614, 34317), (738, 28551), (837, 25174), (921, 22878), (1107, 19034), (1271, 16578), (1674, 12587), (1842, 11439), (2214, 9517), (2542, 8289), (2763, 7626), (3813, 5526)]