21018746

素因数分解:

$2^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{1543}}^1$

素因数の和:1698

約数の個数: 24

約数和(自身を含む): 36963360

約数和(自身を除く): 15944614

約数列:

[1, 2, 7, 14, 49, 98, 139, 278, 973, 1543, 1946, 3086, 6811, 10801, 13622, 21602, 75607, 151214, 214477, 428954, 1501339, 3002678, 10509373, 21018746]

約数ペア:

[(1, 21018746), (2, 10509373), (7, 3002678), (14, 1501339), (49, 428954), (98, 214477), (139, 151214), (278, 75607), (973, 21602), (1543, 13622), (1946, 10801), (3086, 6811)]