20197980190

素因数分解:

$2^1\times 5^1\times {\mathrm{107}}^1\times {\mathrm{139}}^2\times {\mathrm{977}}^1$

素因数の和:1369

約数の個数: 48

約数和(自身を含む): 36999875952

約数和(自身を除く): 16801895762

約数列:

[1, 2, 5, 10, 107, 139, 214, 278, 535, 695, 977, 1070, 1390, 1954, 4885, 9770, 14873, 19321, 29746, 38642, 74365, 96605, 104539, 135803, 148730, 193210, 209078, 271606, 522695, 679015, 1045390, 1358030, 2067347, 4134694, 10336735, 14530921, 18876617, 20673470, 29061842, 37753234, 72654605, 94383085, 145309210, 188766170, 2019798019, 4039596038, 10098990095, 20197980190]

約数ペア:

[(1, 20197980190), (2, 10098990095), (5, 4039596038), (10, 2019798019), (107, 188766170), (139, 145309210), (214, 94383085), (278, 72654605), (535, 37753234), (695, 29061842), (977, 20673470), (1070, 18876617), (1390, 14530921), (1954, 10336735), (4885, 4134694), (9770, 2067347), (14873, 1358030), (19321, 1045390), (29746, 679015), (38642, 522695), (74365, 271606), (96605, 209078), (104539, 193210), (135803, 148730)]