71687380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{9929}}^1$

素因数の和:9976

約数の個数: 36

約数和(自身を含む): 158899860

約数和(自身を除く): 87212480

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 3610, 7220, 9929, 19858, 39716, 49645, 99290, 188651, 198580, 377302, 754604, 943255, 1886510, 3584369, 3773020, 7168738, 14337476, 17921845, 35843690, 71687380]

約数ペア:

[(1, 71687380), (2, 35843690), (4, 17921845), (5, 14337476), (10, 7168738), (19, 3773020), (20, 3584369), (38, 1886510), (76, 943255), (95, 754604), (190, 377302), (361, 198580), (380, 188651), (722, 99290), (1444, 49645), (1805, 39716), (3610, 19858), (7220, 9929)]