21000994557

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1583}}^1\times {\mathrm{13691}}^1$

素因数の和:15313

約数の個数: 32

約数和(自身を含む): 31230904320

約数和(自身を除く): 10229909763

約数列:

[1, 3, 17, 19, 51, 57, 323, 969, 1583, 4749, 13691, 26911, 30077, 41073, 80733, 90231, 232747, 260129, 511309, 698241, 780387, 1533927, 4422193, 13266579, 21672853, 65018559, 368438501, 411784207, 1105315503, 1235352621, 7000331519, 21000994557]

約数ペア:

[(1, 21000994557), (3, 7000331519), (17, 1235352621), (19, 1105315503), (51, 411784207), (57, 368438501), (323, 65018559), (969, 21672853), (1583, 13266579), (4749, 4422193), (13691, 1533927), (26911, 780387), (30077, 698241), (41073, 511309), (80733, 260129), (90231, 232747)]