21009261

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1877}}^1$

素因数の和:1941

約数の個数: 32

約数和(自身を含む): 35336448

約数和(自身を除く): 14327187

約数列:

[1, 3, 7, 13, 21, 39, 41, 91, 123, 273, 287, 533, 861, 1599, 1877, 3731, 5631, 11193, 13139, 24401, 39417, 73203, 76957, 170807, 230871, 512421, 538699, 1000441, 1616097, 3001323, 7003087, 21009261]

約数ペア:

[(1, 21009261), (3, 7003087), (7, 3001323), (13, 1616097), (21, 1000441), (39, 538699), (41, 512421), (91, 230871), (123, 170807), (273, 76957), (287, 73203), (533, 39417), (861, 24401), (1599, 13139), (1877, 11193), (3731, 5631)]