19894412

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{157}}^1\times {\mathrm{401}}^1$

素因数の和:641

約数の個数: 24

約数和(自身を含む): 35568960

約数和(自身を除く): 15674548

約数列:

[1, 2, 4, 79, 157, 158, 314, 316, 401, 628, 802, 1604, 12403, 24806, 31679, 49612, 62957, 63358, 125914, 126716, 251828, 4973603, 9947206, 19894412]

約数ペア:

[(1, 19894412), (2, 9947206), (4, 4973603), (79, 251828), (157, 126716), (158, 125914), (314, 63358), (316, 62957), (401, 49612), (628, 31679), (802, 24806), (1604, 12403)]