19878716

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1511}}^1$

素因数の和:1562

約数の個数: 48

約数和(自身を含む): 42674688

約数和(自身を除く): 22795972

約数列:

[1, 2, 4, 11, 13, 22, 23, 26, 44, 46, 52, 92, 143, 253, 286, 299, 506, 572, 598, 1012, 1196, 1511, 3022, 3289, 6044, 6578, 13156, 16621, 19643, 33242, 34753, 39286, 66484, 69506, 78572, 139012, 216073, 382283, 432146, 451789, 764566, 864292, 903578, 1529132, 1807156, 4969679, 9939358, 19878716]

約数ペア:

[(1, 19878716), (2, 9939358), (4, 4969679), (11, 1807156), (13, 1529132), (22, 903578), (23, 864292), (26, 764566), (44, 451789), (46, 432146), (52, 382283), (92, 216073), (143, 139012), (253, 78572), (286, 69506), (299, 66484), (506, 39286), (572, 34753), (598, 33242), (1012, 19643), (1196, 16621), (1511, 13156), (3022, 6578), (3289, 6044)]