20565295280

素因数分解:

$2^4\times 5^1\times {\mathrm{2371}}^1\times {\mathrm{108421}}^1$

素因数の和:110805

約数の個数: 40

約数和(自身を含む): 47834919024

約数和(自身を除く): 27269623744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2371, 4742, 9484, 11855, 18968, 23710, 37936, 47420, 94840, 108421, 189680, 216842, 433684, 542105, 867368, 1084210, 1734736, 2168420, 4336840, 8673680, 257066191, 514132382, 1028264764, 1285330955, 2056529528, 2570661910, 4113059056, 5141323820, 10282647640, 20565295280]

約数ペア:

[(1, 20565295280), (2, 10282647640), (4, 5141323820), (5, 4113059056), (8, 2570661910), (10, 2056529528), (16, 1285330955), (20, 1028264764), (40, 514132382), (80, 257066191), (2371, 8673680), (4742, 4336840), (9484, 2168420), (11855, 1734736), (18968, 1084210), (23710, 867368), (37936, 542105), (47420, 433684), (94840, 216842), (108421, 189680)]