9781972844

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{251879}}^1$

素因数の和:251982

約数の個数: 48

約数和(自身を含む): 20875814400

約数和(自身を除く): 11093841556

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 73, 76, 133, 146, 266, 292, 511, 532, 1022, 1387, 2044, 2774, 5548, 9709, 19418, 38836, 251879, 503758, 1007516, 1763153, 3526306, 4785701, 7052612, 9571402, 18387167, 19142804, 33499907, 36774334, 66999814, 73548668, 128710169, 133999628, 257420338, 349356173, 514840676, 698712346, 1397424692, 2445493211, 4890986422, 9781972844]

約数ペア:

[(1, 9781972844), (2, 4890986422), (4, 2445493211), (7, 1397424692), (14, 698712346), (19, 514840676), (28, 349356173), (38, 257420338), (73, 133999628), (76, 128710169), (133, 73548668), (146, 66999814), (266, 36774334), (292, 33499907), (511, 19142804), (532, 18387167), (1022, 9571402), (1387, 7052612), (2044, 4785701), (2774, 3526306), (5548, 1763153), (9709, 1007516), (19418, 503758), (38836, 251879)]