20633120

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2999}}^1$

素因数の和:3057

約数の個数: 48

約数和(自身を含む): 49896000

約数和(自身を除く): 29262880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 2999, 3440, 5998, 6880, 11996, 14995, 23992, 29990, 47984, 59980, 95968, 119960, 128957, 239920, 257914, 479840, 515828, 644785, 1031656, 1289570, 2063312, 2579140, 4126624, 5158280, 10316560, 20633120]

約数ペア:

[(1, 20633120), (2, 10316560), (4, 5158280), (5, 4126624), (8, 2579140), (10, 2063312), (16, 1289570), (20, 1031656), (32, 644785), (40, 515828), (43, 479840), (80, 257914), (86, 239920), (160, 128957), (172, 119960), (215, 95968), (344, 59980), (430, 47984), (688, 29990), (860, 23992), (1376, 14995), (1720, 11996), (2999, 6880), (3440, 5998)]