21253383

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{4481}}^1$

素因数の和:4535

約数の個数: 24

約数和(自身を含む): 33561216

約数和(自身を除く): 12307833

約数列:

[1, 3, 9, 17, 31, 51, 93, 153, 279, 527, 1581, 4481, 4743, 13443, 40329, 76177, 138911, 228531, 416733, 685593, 1250199, 2361487, 7084461, 21253383]

約数ペア:

[(1, 21253383), (3, 7084461), (9, 2361487), (17, 1250199), (31, 685593), (51, 416733), (93, 228531), (153, 138911), (279, 76177), (527, 40329), (1581, 13443), (4481, 4743)]