20638624

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{283}}^1$

素因数の和:389

約数の個数: 48

約数和(自身を含む): 42511392

約数和(自身を除く): 21872768

約数列:

[1, 2, 4, 8, 16, 32, 43, 53, 86, 106, 172, 212, 283, 344, 424, 566, 688, 848, 1132, 1376, 1696, 2264, 2279, 4528, 4558, 9056, 9116, 12169, 14999, 18232, 24338, 29998, 36464, 48676, 59996, 72928, 97352, 119992, 194704, 239984, 389408, 479968, 644957, 1289914, 2579828, 5159656, 10319312, 20638624]

約数ペア:

[(1, 20638624), (2, 10319312), (4, 5159656), (8, 2579828), (16, 1289914), (32, 644957), (43, 479968), (53, 389408), (86, 239984), (106, 194704), (172, 119992), (212, 97352), (283, 72928), (344, 59996), (424, 48676), (566, 36464), (688, 29998), (848, 24338), (1132, 18232), (1376, 14999), (1696, 12169), (2264, 9116), (2279, 9056), (4528, 4558)]