20919880

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{22739}}^1$

素因数の和:22773

約数の個数: 32

約数和(自身を含む): 49118400

約数和(自身を除く): 28198520

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 22739, 45478, 90956, 113695, 181912, 227390, 454780, 522997, 909560, 1045994, 2091988, 2614985, 4183976, 5229970, 10459940, 20919880]

約数ペア:

[(1, 20919880), (2, 10459940), (4, 5229970), (5, 4183976), (8, 2614985), (10, 2091988), (20, 1045994), (23, 909560), (40, 522997), (46, 454780), (92, 227390), (115, 181912), (184, 113695), (230, 90956), (460, 45478), (920, 22739)]