20951973

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{6521}}^1$

素因数の和:6554

約数の個数: 32

約数和(自身を含む): 37566720

約数和(自身を除く): 16614747

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 119, 153, 189, 357, 459, 1071, 3213, 6521, 19563, 45647, 58689, 110857, 136941, 176067, 332571, 410823, 775999, 997713, 1232469, 2327997, 2993139, 6983991, 20951973]

約数ペア:

[(1, 20951973), (3, 6983991), (7, 2993139), (9, 2327997), (17, 1232469), (21, 997713), (27, 775999), (51, 410823), (63, 332571), (119, 176067), (153, 136941), (189, 110857), (357, 58689), (459, 45647), (1071, 19563), (3213, 6521)]