81257528

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2113}}^1$

素因数の和:2172

約数の個数: 64

約数和(自身を含む): 182649600

約数和(自身を除く): 101392072

約数列:

[1, 2, 4, 8, 11, 19, 22, 23, 38, 44, 46, 76, 88, 92, 152, 184, 209, 253, 418, 437, 506, 836, 874, 1012, 1672, 1748, 2024, 2113, 3496, 4226, 4807, 8452, 9614, 16904, 19228, 23243, 38456, 40147, 46486, 48599, 80294, 92972, 97198, 160588, 185944, 194396, 321176, 388792, 441617, 534589, 883234, 923381, 1069178, 1766468, 1846762, 2138356, 3532936, 3693524, 4276712, 7387048, 10157191, 20314382, 40628764, 81257528]

約数ペア:

[(1, 81257528), (2, 40628764), (4, 20314382), (8, 10157191), (11, 7387048), (19, 4276712), (22, 3693524), (23, 3532936), (38, 2138356), (44, 1846762), (46, 1766468), (76, 1069178), (88, 923381), (92, 883234), (152, 534589), (184, 441617), (209, 388792), (253, 321176), (418, 194396), (437, 185944), (506, 160588), (836, 97198), (874, 92972), (1012, 80294), (1672, 48599), (1748, 46486), (2024, 40147), (2113, 38456), (3496, 23243), (4226, 19228), (4807, 16904), (8452, 9614)]