39925990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{1559}}^1$

素因数の和:1776

約数の個数: 32

約数和(自身を含む): 77837760

約数和(自身を除く): 37911770

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 197, 394, 985, 1559, 1970, 2561, 3118, 5122, 7795, 12805, 15590, 20267, 25610, 40534, 101335, 202670, 307123, 614246, 1535615, 3071230, 3992599, 7985198, 19962995, 39925990]

約数ペア:

[(1, 39925990), (2, 19962995), (5, 7985198), (10, 3992599), (13, 3071230), (26, 1535615), (65, 614246), (130, 307123), (197, 202670), (394, 101335), (985, 40534), (1559, 25610), (1970, 20267), (2561, 15590), (3118, 12805), (5122, 7795)]