21016233

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:275

約数の個数: 64

約数和(自身を含む): 39075840

約数和(自身を除く): 18059607

約数列:

[1, 3, 7, 9, 17, 21, 27, 31, 51, 63, 93, 119, 153, 189, 211, 217, 279, 357, 459, 527, 633, 651, 837, 1071, 1477, 1581, 1899, 1953, 3213, 3587, 3689, 4431, 4743, 5697, 5859, 6541, 10761, 11067, 13293, 14229, 19623, 25109, 32283, 33201, 39879, 45787, 58869, 75327, 96849, 99603, 111197, 137361, 176607, 225981, 333591, 412083, 677943, 778379, 1000773, 1236249, 2335137, 3002319, 7005411, 21016233]

約数ペア:

[(1, 21016233), (3, 7005411), (7, 3002319), (9, 2335137), (17, 1236249), (21, 1000773), (27, 778379), (31, 677943), (51, 412083), (63, 333591), (93, 225981), (119, 176607), (153, 137361), (189, 111197), (211, 99603), (217, 96849), (279, 75327), (357, 58869), (459, 45787), (527, 39879), (633, 33201), (651, 32283), (837, 25109), (1071, 19623), (1477, 14229), (1581, 13293), (1899, 11067), (1953, 10761), (3213, 6541), (3587, 5859), (3689, 5697), (4431, 4743)]