19780406

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{2467}}^1$

素因数の和:2699

約数の個数: 16

約数和(自身を含む): 31392960

約数和(自身を除く): 11612554

約数列:

[1, 2, 19, 38, 211, 422, 2467, 4009, 4934, 8018, 46873, 93746, 520537, 1041074, 9890203, 19780406]

約数ペア:

[(1, 19780406), (2, 9890203), (19, 1041074), (38, 520537), (211, 93746), (422, 46873), (2467, 8018), (4009, 4934)]