18520972

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{379}}^1\times {\mathrm{643}}^1$

素因数の和:1045

約数の個数: 24

約数和(自身を含む): 34260800

約数和(自身を除く): 15739828

約数列:

[1, 2, 4, 19, 38, 76, 379, 643, 758, 1286, 1516, 2572, 7201, 12217, 14402, 24434, 28804, 48868, 243697, 487394, 974788, 4630243, 9260486, 18520972]

約数ペア:

[(1, 18520972), (2, 9260486), (4, 4630243), (19, 974788), (38, 487394), (76, 243697), (379, 48868), (643, 28804), (758, 24434), (1286, 14402), (1516, 12217), (2572, 7201)]