20509216

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7043}}^1$

素因数の和:7073

約数の個数: 48

約数和(自身を含む): 49702464

約数和(自身を除く): 29193248

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 182, 208, 224, 364, 416, 728, 1456, 2912, 7043, 14086, 28172, 49301, 56344, 91559, 98602, 112688, 183118, 197204, 225376, 366236, 394408, 640913, 732472, 788816, 1281826, 1464944, 1577632, 2563652, 2929888, 5127304, 10254608, 20509216]

約数ペア:

[(1, 20509216), (2, 10254608), (4, 5127304), (7, 2929888), (8, 2563652), (13, 1577632), (14, 1464944), (16, 1281826), (26, 788816), (28, 732472), (32, 640913), (52, 394408), (56, 366236), (91, 225376), (104, 197204), (112, 183118), (182, 112688), (208, 98602), (224, 91559), (364, 56344), (416, 49301), (728, 28172), (1456, 14086), (2912, 7043)]