128884220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{17851}}^1$

素因数の和:17898

約数の個数: 36

約数和(自身を含む): 285667704

約数和(自身を除く): 156783484

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 3610, 7220, 17851, 35702, 71404, 89255, 178510, 339169, 357020, 678338, 1356676, 1695845, 3391690, 6444211, 6783380, 12888422, 25776844, 32221055, 64442110, 128884220]

約数ペア:

[(1, 128884220), (2, 64442110), (4, 32221055), (5, 25776844), (10, 12888422), (19, 6783380), (20, 6444211), (38, 3391690), (76, 1695845), (95, 1356676), (190, 678338), (361, 357020), (380, 339169), (722, 178510), (1444, 89255), (1805, 71404), (3610, 35702), (7220, 17851)]