81021304

素因数分解:

$2^3\times 7^2\times {\mathrm{13}}^2\times {\mathrm{1223}}^1$

素因数の和:1269

約数の個数: 72

約数和(自身を含む): 191513160

約数和(自身を除く): 110491856

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 49, 52, 56, 91, 98, 104, 169, 182, 196, 338, 364, 392, 637, 676, 728, 1183, 1223, 1274, 1352, 2366, 2446, 2548, 4732, 4892, 5096, 8281, 8561, 9464, 9784, 15899, 16562, 17122, 31798, 33124, 34244, 59927, 63596, 66248, 68488, 111293, 119854, 127192, 206687, 222586, 239708, 413374, 445172, 479416, 779051, 826748, 890344, 1446809, 1558102, 1653496, 2893618, 3116204, 5787236, 6232408, 10127663, 11574472, 20255326, 40510652, 81021304]

約数ペア:

[(1, 81021304), (2, 40510652), (4, 20255326), (7, 11574472), (8, 10127663), (13, 6232408), (14, 5787236), (26, 3116204), (28, 2893618), (49, 1653496), (52, 1558102), (56, 1446809), (91, 890344), (98, 826748), (104, 779051), (169, 479416), (182, 445172), (196, 413374), (338, 239708), (364, 222586), (392, 206687), (637, 127192), (676, 119854), (728, 111293), (1183, 68488), (1223, 66248), (1274, 63596), (1352, 59927), (2366, 34244), (2446, 33124), (2548, 31798), (4732, 17122), (4892, 16562), (5096, 15899), (8281, 9784), (8561, 9464)]