21987494

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{907}}^1$

素因数の和:980

約数の個数: 32

約数和(自身を含む): 37656576

約数和(自身を除く): 15669082

約数列:

[1, 2, 17, 23, 31, 34, 46, 62, 391, 527, 713, 782, 907, 1054, 1426, 1814, 12121, 15419, 20861, 24242, 28117, 30838, 41722, 56234, 354637, 477989, 646691, 709274, 955978, 1293382, 10993747, 21987494]

約数ペア:

[(1, 21987494), (2, 10993747), (17, 1293382), (23, 955978), (31, 709274), (34, 646691), (46, 477989), (62, 354637), (391, 56234), (527, 41722), (713, 30838), (782, 28117), (907, 24242), (1054, 20861), (1426, 15419), (1814, 12121)]