19984030

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{1307}}^1$

素因数の和:1464

約数の個数: 32

約数和(自身を含む): 39553920

約数和(自身を除く): 19569890

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 139, 278, 695, 1307, 1390, 1529, 2614, 3058, 6535, 7645, 13070, 14377, 15290, 28754, 71885, 143770, 181673, 363346, 908365, 1816730, 1998403, 3996806, 9992015, 19984030]

約数ペア:

[(1, 19984030), (2, 9992015), (5, 3996806), (10, 1998403), (11, 1816730), (22, 908365), (55, 363346), (110, 181673), (139, 143770), (278, 71885), (695, 28754), (1307, 15290), (1390, 14377), (1529, 13070), (2614, 7645), (3058, 6535)]