21242718

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{3181}}^1$

素因数の和:3249

約数の個数: 48

約数和(自身を含む): 53610336

約数和(自身を除く): 32367618

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 53, 63, 106, 126, 159, 318, 371, 477, 742, 954, 1113, 2226, 3181, 3339, 6362, 6678, 9543, 19086, 22267, 28629, 44534, 57258, 66801, 133602, 168593, 200403, 337186, 400806, 505779, 1011558, 1180151, 1517337, 2360302, 3034674, 3540453, 7080906, 10621359, 21242718]

約数ペア:

[(1, 21242718), (2, 10621359), (3, 7080906), (6, 3540453), (7, 3034674), (9, 2360302), (14, 1517337), (18, 1180151), (21, 1011558), (42, 505779), (53, 400806), (63, 337186), (106, 200403), (126, 168593), (159, 133602), (318, 66801), (371, 57258), (477, 44534), (742, 28629), (954, 22267), (1113, 19086), (2226, 9543), (3181, 6678), (3339, 6362)]