20523870

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{457}}^1\times {\mathrm{499}}^1$

素因数の和:969

約数の個数: 48

約数和(自身を含む): 53586000

約数和(自身を除く): 33062130

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 457, 499, 914, 998, 1371, 1497, 2285, 2495, 2742, 2994, 4113, 4491, 4570, 4990, 6855, 7485, 8226, 8982, 13710, 14970, 20565, 22455, 41130, 44910, 228043, 456086, 684129, 1140215, 1368258, 2052387, 2280430, 3420645, 4104774, 6841290, 10261935, 20523870]

約数ペア:

[(1, 20523870), (2, 10261935), (3, 6841290), (5, 4104774), (6, 3420645), (9, 2280430), (10, 2052387), (15, 1368258), (18, 1140215), (30, 684129), (45, 456086), (90, 228043), (457, 44910), (499, 41130), (914, 22455), (998, 20565), (1371, 14970), (1497, 13710), (2285, 8982), (2495, 8226), (2742, 7485), (2994, 6855), (4113, 4990), (4491, 4570)]