20818278

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2069}}^1$

素因数の和:2133

約数の個数: 48

約数和(自身を含む): 49729680

約数和(自身を除く): 28911402

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 43, 78, 86, 117, 129, 234, 258, 387, 559, 774, 1118, 1677, 2069, 3354, 4138, 5031, 6207, 10062, 12414, 18621, 26897, 37242, 53794, 80691, 88967, 161382, 177934, 242073, 266901, 484146, 533802, 800703, 1156571, 1601406, 2313142, 3469713, 6939426, 10409139, 20818278]

約数ペア:

[(1, 20818278), (2, 10409139), (3, 6939426), (6, 3469713), (9, 2313142), (13, 1601406), (18, 1156571), (26, 800703), (39, 533802), (43, 484146), (78, 266901), (86, 242073), (117, 177934), (129, 161382), (234, 88967), (258, 80691), (387, 53794), (559, 37242), (774, 26897), (1118, 18621), (1677, 12414), (2069, 10062), (3354, 6207), (4138, 5031)]