1685427820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{8539}}^1$

素因数の和:8758

約数の個数: 48

約数和(自身を含む): 3615494400

約数和(自身を除く): 1930066580

約数列:

[1, 2, 4, 5, 10, 20, 71, 139, 142, 278, 284, 355, 556, 695, 710, 1390, 1420, 2780, 8539, 9869, 17078, 19738, 34156, 39476, 42695, 49345, 85390, 98690, 170780, 197380, 606269, 1186921, 1212538, 2373842, 2425076, 3031345, 4747684, 5934605, 6062690, 11869210, 12125380, 23738420, 84271391, 168542782, 337085564, 421356955, 842713910, 1685427820]

約数ペア:

[(1, 1685427820), (2, 842713910), (4, 421356955), (5, 337085564), (10, 168542782), (20, 84271391), (71, 23738420), (139, 12125380), (142, 11869210), (278, 6062690), (284, 5934605), (355, 4747684), (556, 3031345), (695, 2425076), (710, 2373842), (1390, 1212538), (1420, 1186921), (2780, 606269), (8539, 197380), (9869, 170780), (17078, 98690), (19738, 85390), (34156, 49345), (39476, 42695)]