21053216

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1117}}^1$

素因数の和:1177

約数の個数: 48

約数和(自身を含む): 45077760

約数和(自身を除く): 24024544

約数列:

[1, 2, 4, 8, 16, 19, 31, 32, 38, 62, 76, 124, 152, 248, 304, 496, 589, 608, 992, 1117, 1178, 2234, 2356, 4468, 4712, 8936, 9424, 17872, 18848, 21223, 34627, 35744, 42446, 69254, 84892, 138508, 169784, 277016, 339568, 554032, 657913, 679136, 1108064, 1315826, 2631652, 5263304, 10526608, 21053216]

約数ペア:

[(1, 21053216), (2, 10526608), (4, 5263304), (8, 2631652), (16, 1315826), (19, 1108064), (31, 679136), (32, 657913), (38, 554032), (62, 339568), (76, 277016), (124, 169784), (152, 138508), (248, 84892), (304, 69254), (496, 42446), (589, 35744), (608, 34627), (992, 21223), (1117, 18848), (1178, 17872), (2234, 9424), (2356, 8936), (4468, 4712)]