19894539

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{419}}^1$

素因数の和:472

約数の個数: 48

約数和(自身を含む): 34473600

約数和(自身を除く): 14579061

約数列:

[1, 3, 7, 17, 19, 21, 49, 51, 57, 119, 133, 147, 323, 357, 399, 419, 833, 931, 969, 1257, 2261, 2499, 2793, 2933, 6783, 7123, 7961, 8799, 15827, 20531, 21369, 23883, 47481, 49861, 55727, 61593, 135337, 149583, 167181, 349027, 390089, 406011, 947359, 1047081, 1170267, 2842077, 6631513, 19894539]

約数ペア:

[(1, 19894539), (3, 6631513), (7, 2842077), (17, 1170267), (19, 1047081), (21, 947359), (49, 406011), (51, 390089), (57, 349027), (119, 167181), (133, 149583), (147, 135337), (323, 61593), (357, 55727), (399, 49861), (419, 47481), (833, 23883), (931, 21369), (969, 20531), (1257, 15827), (2261, 8799), (2499, 7961), (2793, 7123), (2933, 6783)]