21000261777

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{577}}^1\times {\mathrm{5227}}^1$

素因数の和:6029

約数の個数: 32

約数和(自身を含む): 30749673984

約数和(自身を除く): 9749412207

約数列:

[1, 3, 11, 33, 211, 577, 633, 1731, 2321, 5227, 6347, 6963, 15681, 19041, 57497, 121747, 172491, 365241, 1102897, 1339217, 3015979, 3308691, 4017651, 9047937, 12131867, 33175769, 36395601, 99527307, 636371569, 1909114707, 7000087259, 21000261777]

約数ペア:

[(1, 21000261777), (3, 7000087259), (11, 1909114707), (33, 636371569), (211, 99527307), (577, 36395601), (633, 33175769), (1731, 12131867), (2321, 9047937), (5227, 4017651), (6347, 3308691), (6963, 3015979), (15681, 1339217), (19041, 1102897), (57497, 365241), (121747, 172491)]