28273539

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{191}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 47278080

約数和(自身を除く): 19004541

約数列:

[1, 3, 7, 19, 21, 49, 53, 57, 133, 147, 159, 191, 371, 399, 573, 931, 1007, 1113, 1337, 2597, 2793, 3021, 3629, 4011, 7049, 7791, 9359, 10123, 10887, 21147, 25403, 28077, 30369, 49343, 70861, 76209, 148029, 177821, 192337, 212583, 496027, 533463, 577011, 1346359, 1488081, 4039077, 9424513, 28273539]

約数ペア:

[(1, 28273539), (3, 9424513), (7, 4039077), (19, 1488081), (21, 1346359), (49, 577011), (53, 533463), (57, 496027), (133, 212583), (147, 192337), (159, 177821), (191, 148029), (371, 76209), (399, 70861), (573, 49343), (931, 30369), (1007, 28077), (1113, 25403), (1337, 21147), (2597, 10887), (2793, 10123), (3021, 9359), (3629, 7791), (4011, 7049)]