78697820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{353}}^1$

素因数の和:590

約数の個数: 48

約数和(自身を含む): 169138368

約数和(自身を除く): 90440548

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 157, 284, 314, 353, 355, 628, 706, 710, 785, 1412, 1420, 1570, 1765, 3140, 3530, 7060, 11147, 22294, 25063, 44588, 50126, 55421, 55735, 100252, 110842, 111470, 125315, 221684, 222940, 250630, 277105, 501260, 554210, 1108420, 3934891, 7869782, 15739564, 19674455, 39348910, 78697820]

約数ペア:

[(1, 78697820), (2, 39348910), (4, 19674455), (5, 15739564), (10, 7869782), (20, 3934891), (71, 1108420), (142, 554210), (157, 501260), (284, 277105), (314, 250630), (353, 222940), (355, 221684), (628, 125315), (706, 111470), (710, 110842), (785, 100252), (1412, 55735), (1420, 55421), (1570, 50126), (1765, 44588), (3140, 25063), (3530, 22294), (7060, 11147)]