40728020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{5641}}^1$

素因数の和:5688

約数の個数: 36

約数和(自身を含む): 90283284

約数和(自身を除く): 49555264

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 3610, 5641, 7220, 11282, 22564, 28205, 56410, 107179, 112820, 214358, 428716, 535895, 1071790, 2036401, 2143580, 4072802, 8145604, 10182005, 20364010, 40728020]

約数ペア:

[(1, 40728020), (2, 20364010), (4, 10182005), (5, 8145604), (10, 4072802), (19, 2143580), (20, 2036401), (38, 1071790), (76, 535895), (95, 428716), (190, 214358), (361, 112820), (380, 107179), (722, 56410), (1444, 28205), (1805, 22564), (3610, 11282), (5641, 7220)]