216975591

素因数分解:

$3^4\times 7^1\times {\mathrm{257}}^1\times {\mathrm{1489}}^1$

素因数の和:1765

約数の個数: 40

約数和(自身を含む): 372118560

約数和(自身を除く): 155142969

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 257, 567, 771, 1489, 1799, 2313, 4467, 5397, 6939, 10423, 13401, 16191, 20817, 31269, 40203, 48573, 93807, 120609, 145719, 281421, 382673, 844263, 1148019, 2678711, 3444057, 8036133, 10332171, 24108399, 30996513, 72325197, 216975591]

約数ペア:

[(1, 216975591), (3, 72325197), (7, 30996513), (9, 24108399), (21, 10332171), (27, 8036133), (63, 3444057), (81, 2678711), (189, 1148019), (257, 844263), (567, 382673), (771, 281421), (1489, 145719), (1799, 120609), (2313, 93807), (4467, 48573), (5397, 40203), (6939, 31269), (10423, 20817), (13401, 16191)]