20139919120

素因数分解:

$2^4\times 5^1\times {\mathrm{877}}^1\times {\mathrm{287057}}^1$

素因数の和:287947

約数の個数: 40

約数和(自身を含む): 46878867864

約数和(自身を除く): 26738948744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 877, 1754, 3508, 4385, 7016, 8770, 14032, 17540, 35080, 70160, 287057, 574114, 1148228, 1435285, 2296456, 2870570, 4592912, 5741140, 11482280, 22964560, 251748989, 503497978, 1006995956, 1258744945, 2013991912, 2517489890, 4027983824, 5034979780, 10069959560, 20139919120]

約数ペア:

[(1, 20139919120), (2, 10069959560), (4, 5034979780), (5, 4027983824), (8, 2517489890), (10, 2013991912), (16, 1258744945), (20, 1006995956), (40, 503497978), (80, 251748989), (877, 22964560), (1754, 11482280), (3508, 5741140), (4385, 4592912), (7016, 2870570), (8770, 2296456), (14032, 1435285), (17540, 1148228), (35080, 574114), (70160, 287057)]