21226971

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{293}}^1$

素因数の和:387

約数の個数: 32

約数和(自身を含む): 31610880

約数和(自身を除く): 10383909

約数列:

[1, 3, 19, 31, 41, 57, 93, 123, 293, 589, 779, 879, 1271, 1767, 2337, 3813, 5567, 9083, 12013, 16701, 24149, 27249, 36039, 72447, 172577, 228247, 372403, 517731, 684741, 1117209, 7075657, 21226971]

約数ペア:

[(1, 21226971), (3, 7075657), (19, 1117209), (31, 684741), (41, 517731), (57, 372403), (93, 228247), (123, 172577), (293, 72447), (589, 36039), (779, 27249), (879, 24149), (1271, 16701), (1767, 12013), (2337, 9083), (3813, 5567)]