21157458

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{3677}}^1$

素因数の和:3826

約数の個数: 32

約数和(自身を含む): 48726144

約数和(自身を除く): 27568686

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 137, 274, 411, 822, 959, 1918, 2877, 3677, 5754, 7354, 11031, 22062, 25739, 51478, 77217, 154434, 503749, 1007498, 1511247, 3022494, 3526243, 7052486, 10578729, 21157458]

約数ペア:

[(1, 21157458), (2, 10578729), (3, 7052486), (6, 3526243), (7, 3022494), (14, 1511247), (21, 1007498), (42, 503749), (137, 154434), (274, 77217), (411, 51478), (822, 25739), (959, 22062), (1918, 11031), (2877, 7354), (3677, 5754)]