19903070

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:233

約数の個数: 64

約数和(自身を含む): 41990400

約数和(自身を除く): 22087330

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 89, 95, 107, 110, 178, 190, 209, 214, 418, 445, 535, 890, 979, 1045, 1070, 1177, 1691, 1958, 2033, 2090, 2354, 3382, 4066, 4895, 5885, 8455, 9523, 9790, 10165, 11770, 16910, 18601, 19046, 20330, 22363, 37202, 44726, 47615, 93005, 95230, 104753, 111815, 180937, 186010, 209506, 223630, 361874, 523765, 904685, 1047530, 1809370, 1990307, 3980614, 9951535, 19903070]

約数ペア:

[(1, 19903070), (2, 9951535), (5, 3980614), (10, 1990307), (11, 1809370), (19, 1047530), (22, 904685), (38, 523765), (55, 361874), (89, 223630), (95, 209506), (107, 186010), (110, 180937), (178, 111815), (190, 104753), (209, 95230), (214, 93005), (418, 47615), (445, 44726), (535, 37202), (890, 22363), (979, 20330), (1045, 19046), (1070, 18601), (1177, 16910), (1691, 11770), (1958, 10165), (2033, 9790), (2090, 9523), (2354, 8455), (3382, 5885), (4066, 4895)]