20742148

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{307}}^1$

素因数の和:464

約数の個数: 48

約数和(自身を含む): 44154880

約数和(自身を除く): 23412732

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 127, 133, 254, 266, 307, 508, 532, 614, 889, 1228, 1778, 2149, 2413, 3556, 4298, 4826, 5833, 8596, 9652, 11666, 16891, 23332, 33782, 38989, 40831, 67564, 77978, 81662, 155956, 163324, 272923, 545846, 740791, 1091692, 1481582, 2963164, 5185537, 10371074, 20742148]

約数ペア:

[(1, 20742148), (2, 10371074), (4, 5185537), (7, 2963164), (14, 1481582), (19, 1091692), (28, 740791), (38, 545846), (76, 272923), (127, 163324), (133, 155956), (254, 81662), (266, 77978), (307, 67564), (508, 40831), (532, 38989), (614, 33782), (889, 23332), (1228, 16891), (1778, 11666), (2149, 9652), (2413, 8596), (3556, 5833), (4298, 4826)]