19933880

素因数分解:

$2^3\times 5^1\times {\mathrm{607}}^1\times {\mathrm{821}}^1$

素因数の和:1439

約数の個数: 32

約数和(自身を含む): 44979840

約数和(自身を除く): 25045960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 607, 821, 1214, 1642, 2428, 3035, 3284, 4105, 4856, 6070, 6568, 8210, 12140, 16420, 24280, 32840, 498347, 996694, 1993388, 2491735, 3986776, 4983470, 9966940, 19933880]

約数ペア:

[(1, 19933880), (2, 9966940), (4, 4983470), (5, 3986776), (8, 2491735), (10, 1993388), (20, 996694), (40, 498347), (607, 32840), (821, 24280), (1214, 16420), (1642, 12140), (2428, 8210), (3035, 6568), (3284, 6070), (4105, 4856)]