19982378

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{853}}^1$

素因数の和:938

約数の個数: 32

約数和(自身を含む): 34863696

約数和(自身を除く): 14881318

約数列:

[1, 2, 13, 17, 26, 34, 53, 106, 221, 442, 689, 853, 901, 1378, 1706, 1802, 11089, 11713, 14501, 22178, 23426, 29002, 45209, 90418, 188513, 377026, 587717, 768553, 1175434, 1537106, 9991189, 19982378]

約数ペア:

[(1, 19982378), (2, 9991189), (13, 1537106), (17, 1175434), (26, 768553), (34, 587717), (53, 377026), (106, 188513), (221, 90418), (442, 45209), (689, 29002), (853, 23426), (901, 22178), (1378, 14501), (1706, 11713), (1802, 11089)]