138720784

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{279679}}^1$

素因数の和:279718

約数の個数: 20

約数和(自身を含む): 277442560

約数和(自身を除く): 138721776

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 279679, 559358, 1118716, 2237432, 4474864, 8670049, 17340098, 34680196, 69360392, 138720784]

約数ペア:

[(1, 138720784), (2, 69360392), (4, 34680196), (8, 17340098), (16, 8670049), (31, 4474864), (62, 2237432), (124, 1118716), (248, 559358), (496, 279679)]