19387390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:217

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 21255170

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 79, 97, 110, 115, 158, 194, 230, 253, 395, 485, 506, 790, 869, 970, 1067, 1265, 1738, 1817, 2134, 2231, 2530, 3634, 4345, 4462, 5335, 7663, 8690, 9085, 10670, 11155, 15326, 18170, 19987, 22310, 24541, 38315, 39974, 49082, 76630, 84293, 99935, 122705, 168586, 176249, 199870, 245410, 352498, 421465, 842930, 881245, 1762490, 1938739, 3877478, 9693695, 19387390]

約数ペア:

[(1, 19387390), (2, 9693695), (5, 3877478), (10, 1938739), (11, 1762490), (22, 881245), (23, 842930), (46, 421465), (55, 352498), (79, 245410), (97, 199870), (110, 176249), (115, 168586), (158, 122705), (194, 99935), (230, 84293), (253, 76630), (395, 49082), (485, 39974), (506, 38315), (790, 24541), (869, 22310), (970, 19987), (1067, 18170), (1265, 15326), (1738, 11155), (1817, 10670), (2134, 9085), (2231, 8690), (2530, 7663), (3634, 5335), (4345, 4462)]