21057810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{311}}^1$

素因数の和:419

約数の個数: 64

約数和(自身を含む): 52925184

約数和(自身を除く): 31867374

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 37, 61, 74, 111, 122, 183, 185, 222, 305, 311, 366, 370, 555, 610, 622, 915, 933, 1110, 1555, 1830, 1866, 2257, 3110, 4514, 4665, 6771, 9330, 11285, 11507, 13542, 18971, 22570, 23014, 33855, 34521, 37942, 56913, 57535, 67710, 69042, 94855, 113826, 115070, 172605, 189710, 284565, 345210, 569130, 701927, 1403854, 2105781, 3509635, 4211562, 7019270, 10528905, 21057810]

約数ペア:

[(1, 21057810), (2, 10528905), (3, 7019270), (5, 4211562), (6, 3509635), (10, 2105781), (15, 1403854), (30, 701927), (37, 569130), (61, 345210), (74, 284565), (111, 189710), (122, 172605), (183, 115070), (185, 113826), (222, 94855), (305, 69042), (311, 67710), (366, 57535), (370, 56913), (555, 37942), (610, 34521), (622, 33855), (915, 23014), (933, 22570), (1110, 18971), (1555, 13542), (1830, 11507), (1866, 11285), (2257, 9330), (3110, 6771), (4514, 4665)]