19668978

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{4219}}^1$

素因数の和:4271

約数の個数: 48

約数和(自身を含む): 50032320

約数和(自身を除く): 30363342

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 37, 42, 63, 74, 111, 126, 222, 259, 333, 518, 666, 777, 1554, 2331, 4219, 4662, 8438, 12657, 25314, 29533, 37971, 59066, 75942, 88599, 156103, 177198, 265797, 312206, 468309, 531594, 936618, 1092721, 1404927, 2185442, 2809854, 3278163, 6556326, 9834489, 19668978]

約数ペア:

[(1, 19668978), (2, 9834489), (3, 6556326), (6, 3278163), (7, 2809854), (9, 2185442), (14, 1404927), (18, 1092721), (21, 936618), (37, 531594), (42, 468309), (63, 312206), (74, 265797), (111, 177198), (126, 156103), (222, 88599), (259, 75942), (333, 59066), (518, 37971), (666, 29533), (777, 25314), (1554, 12657), (2331, 8438), (4219, 4662)]