21072366

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{107}}^1\times {\mathrm{521}}^1$

素因数の和:646

約数の個数: 64

約数和(自身を含む): 54120960

約数和(自身を除く): 33048594

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 107, 126, 189, 214, 321, 378, 521, 642, 749, 963, 1042, 1498, 1563, 1926, 2247, 2889, 3126, 3647, 4494, 4689, 5778, 6741, 7294, 9378, 10941, 13482, 14067, 20223, 21882, 28134, 32823, 40446, 55747, 65646, 98469, 111494, 167241, 196938, 334482, 390229, 501723, 780458, 1003446, 1170687, 1505169, 2341374, 3010338, 3512061, 7024122, 10536183, 21072366]

約数ペア:

[(1, 21072366), (2, 10536183), (3, 7024122), (6, 3512061), (7, 3010338), (9, 2341374), (14, 1505169), (18, 1170687), (21, 1003446), (27, 780458), (42, 501723), (54, 390229), (63, 334482), (107, 196938), (126, 167241), (189, 111494), (214, 98469), (321, 65646), (378, 55747), (521, 40446), (642, 32823), (749, 28134), (963, 21882), (1042, 20223), (1498, 14067), (1563, 13482), (1926, 10941), (2247, 9378), (2889, 7294), (3126, 6741), (3647, 5778), (4494, 4689)]