81378756

素因数分解:

$2^2\times 3^5\times {\mathrm{29}}^1\times {\mathrm{2887}}^1$

素因数の和:2935

約数の個数: 72

約数和(自身を含む): 220758720

約数和(自身を除く): 139379964

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 29, 36, 54, 58, 81, 87, 108, 116, 162, 174, 243, 261, 324, 348, 486, 522, 783, 972, 1044, 1566, 2349, 2887, 3132, 4698, 5774, 7047, 8661, 9396, 11548, 14094, 17322, 25983, 28188, 34644, 51966, 77949, 83723, 103932, 155898, 167446, 233847, 251169, 311796, 334892, 467694, 502338, 701541, 753507, 935388, 1004676, 1403082, 1507014, 2260521, 2806164, 3014028, 4521042, 6781563, 9042084, 13563126, 20344689, 27126252, 40689378, 81378756]

約数ペア:

[(1, 81378756), (2, 40689378), (3, 27126252), (4, 20344689), (6, 13563126), (9, 9042084), (12, 6781563), (18, 4521042), (27, 3014028), (29, 2806164), (36, 2260521), (54, 1507014), (58, 1403082), (81, 1004676), (87, 935388), (108, 753507), (116, 701541), (162, 502338), (174, 467694), (243, 334892), (261, 311796), (324, 251169), (348, 233847), (486, 167446), (522, 155898), (783, 103932), (972, 83723), (1044, 77949), (1566, 51966), (2349, 34644), (2887, 28188), (3132, 25983), (4698, 17322), (5774, 14094), (7047, 11548), (8661, 9396)]