16995405

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1217}}^1$

素因数の和:1258

約数の個数: 48

約数和(自身を含む): 33324480

約数和(自身を除く): 16329075

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 49, 57, 95, 105, 133, 147, 245, 285, 399, 665, 735, 931, 1217, 1995, 2793, 3651, 4655, 6085, 8519, 13965, 18255, 23123, 25557, 42595, 59633, 69369, 115615, 127785, 161861, 178899, 298165, 346845, 485583, 809305, 894495, 1133027, 2427915, 3399081, 5665135, 16995405]

約数ペア:

[(1, 16995405), (3, 5665135), (5, 3399081), (7, 2427915), (15, 1133027), (19, 894495), (21, 809305), (35, 485583), (49, 346845), (57, 298165), (95, 178899), (105, 161861), (133, 127785), (147, 115615), (245, 69369), (285, 59633), (399, 42595), (665, 25557), (735, 23123), (931, 18255), (1217, 13965), (1995, 8519), (2793, 6085), (3651, 4655)]