20438838

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{139}}^1\times {\mathrm{389}}^1$

素因数の和:546

約数の個数: 64

約数和(自身を含む): 52416000

約数和(自身を除く): 31977162

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 139, 189, 278, 378, 389, 417, 778, 834, 973, 1167, 1251, 1946, 2334, 2502, 2723, 2919, 3501, 3753, 5446, 5838, 7002, 7506, 8169, 8757, 10503, 16338, 17514, 21006, 24507, 26271, 49014, 52542, 54071, 73521, 108142, 147042, 162213, 324426, 378497, 486639, 756994, 973278, 1135491, 1459917, 2270982, 2919834, 3406473, 6812946, 10219419, 20438838]

約数ペア:

[(1, 20438838), (2, 10219419), (3, 6812946), (6, 3406473), (7, 2919834), (9, 2270982), (14, 1459917), (18, 1135491), (21, 973278), (27, 756994), (42, 486639), (54, 378497), (63, 324426), (126, 162213), (139, 147042), (189, 108142), (278, 73521), (378, 54071), (389, 52542), (417, 49014), (778, 26271), (834, 24507), (973, 21006), (1167, 17514), (1251, 16338), (1946, 10503), (2334, 8757), (2502, 8169), (2723, 7506), (2919, 7002), (3501, 5838), (3753, 5446)]